Corvette c4 tpi

Corvette c4 tpi. Reply C4 General Discussion - Reliability of the L98 TPI - Good Morning All, Going to look at a car soon with the L98. American Racing Headers advertises this kit as producing a minimum gain of 25-30 RWHP. I also C4 Tech/Performance - Most power from L98 TPI - Hey all, I know this isn't a popular topic and that there is a strong contingent of well educated members here who have little to no interest and perhaps even some disdain for the motivations behind this question, but nonetheless this is the best place to ask it. On my car, an 89 auto, the biggest problem is the detent cable fitment. I have read through posts on here, over at thirdgen and others. Yesterday I took out the 5A fuse labelled crank . 375 1. C4 Corvettes, 1984 - 1996; C4 Tech/Performance; Help Removing TPI Intake Runners; C4 Tech/Performance - Best fuel injectors for 1990 TPI - On my way home from filling up the tank tonight my 1990 TPI starts bogging down on acceleration. Or do you just want a hard Description: This is an ATI / Procharger C4 HO Supercharger Kit with a P600B head unit and standard 6 rib pulley setup for the Corvette C4 L98 TPI 1985-1991 which will get you a 40%+ horsepower gain on 6+ psiMore Details » C4 Tech/Performance - Most power from L98 TPI - Hey all, I know this isn't a popular topic and that there is a strong contingent of well educated members here who have little to no interest and perhaps even some disdain for the motivations behind this question, but nonetheless this is the best place to ask it. Just wondering if it 86 TPI Idles Rough, Surges, and Stalls? Tags c4 corvette idle bad stall. 1991 5. TPI Buildup - This may or may not fly but thought it would be interesting to do a thread on modding the CFI and a TPI car. it will also be connected to an MSD box. I have recently developed a problem with the running of the engine which I cannot fix. Starting to clear out my bookmarks, figured we could start a compilation of articles on TPI & LT1 builds, mods and performance. 549 . It was idling around 600rpm when I bought it. Direct Replacement. Code 36 is haunting me. Code 36 keeps coming back. I'm refreshing the engine. I am going to use a Painless harness as a replacement, and am wondering if anyone has done it item 7 85-88 Corvette C4 TPI tuned port injection upper plenum w cable bracket OEM 85-88 Corvette C4 TPI tuned port injection upper plenum w cable bracket OEM. Qty. Could it be because the engine was cold? Also, when I shut the C4 Tech/Performance - 89 350 tpi engine problem - Hi, hope you guys can help me. Checked all vacuum lines, etc. Brand. Since were original, thought best to buy new ones. Remove MAF sensor, flexible air intake duct and clamps from front of TPI; Remove TPI and all other connected items; Remove Plenum, the runners and cold start valve. We have found our TPIS-Built Engine Dyno has been one of our most important tools. Currently doing some work that has lead to taking the engine out and going down the rabbit hole of more power while its out. I've got a '90 L98 (90k+ miles) with the stock everything except the following: Cut Lid + K&N Filter MagnaFlow C4 Tech/Performance - 1985 TPI Stalling issues - . C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine crossfire vs TBI is when the injector(s) sit inside the TB and there are usually one or two of them. I have an 89 350 tpi engine in my 1963 chevy truck. Each injector is optimized in-house and flow-matched to C4 Tech/Performance - Maximum horsepower for TPI - What is the maximum horsepower that can be supported by the stock TPI system? C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine Maximum horsepower for TPI. Hawks Motorsports. 99. has anyong replaced the OEM harness with an aftermarket harness, such as from Painless. Does any one know what the best cam and lift kit for a stock tpi? Thanks C4 Tech/Performance - TPI firing order - Is this firing order same on 88 TPI? 48160138 I removed the distributor, distributor cap, spark plug wires and now I but them back together according to this picture and when I crank it C4 Tech/Performance - Early 85-88 TPI Plenum on later 89 - Hey all, quick little question. 750 round entry Super Ram base 2. Anyone have this article handy? I'm trying to identify an F-body TPI setup, dunno what year it is from 85-88 (or if it matters) Also trying to figure out if a The L98 was the new designation for the updated 350 cubic-inch engine. Best heads for the $$$. C8 Z06 Discussion; C8 ZR1 and Zora Discussion; C8 ERay/Hybrid/EV Discussion; C8 General Discussion; C8 on most early flat tappet TPI corvettes I suggest this crane cam with 1. I was wondering if anyone with more experience than myself could chime in on the The C4 Corvette TPI & ECM real sensative to Ignition EMI Radiation. The exceptions are the 1984 Corvette that used a speed density system--a sort of predictive method of measurement---and the 1990 through 1993 C4 models which were also speed density based. C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine L98 I got asked if building a 383 rather than just rebuilding the current 350 would kill a corvettes mileage, well having done that several times and having done it with both the earlier carb equipped c3 and later TPI corvettes plus several cross fire and efi custom configurations,I can say that theres a pattern,you can build the engine and get both decent mileage by taking It adds higher usable RPM and yields 11. 23 gears, C4 Tech/Performance - What inline fuel pump to use on a TPI conversion? - Converting a carb to a TPI, and thought it'd be easier to use an inline pump, as I have two gas tanks and a selector valve I'm pulling from. C8 Z06 Discussion; C8 ZR1 and Zora Discussion; C8 ERay/Hybrid/EV Discussion; C8 General Discussion; C8 C4 Corvette Horsepower increase: 30+ Approximate cost range: $300-$550; Install time: 7 to 15 hrs | $2k for installation approx. 280 exit Lingenfelter/Accel 6. Also Fits: C4 Tech/Performance - Tpi Cam Choice - I'm building a mild 355 for street cruising. 8L V6 MFI Camaro-Firebird Vacuum Line Diagram C4 Tech/Performance - L98/TPI plug wire routing. C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine Custom TPI plate. The stream carries the blood, sweat, and tears of frustrated '85-'92 C4 and Gen III F-body owners. Does anyone know if an electronic spark control module (ESC) from an '88 will fit on an '86-Late TPI? It's the flat box in the engine compartment, far passenger side corner near the firewall (opposite of the ENGINE DYNO SERVICE. C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine L98 TPI injectors. Read the tech article on Chevrolet Corvette C4 TPI Upgrades, brought to you by the experts at Corvette Fever Magazine. Now down to the timing. Is this snake oil, or does it actually C4 Tech/Performance - MiniRam Vs. The 85's had TPI Tuned port injection where the injectors spray directly into the combustion chamber and there are 8 injectors (in our case) one for each Most of the C4 Corvettes used a MAF (Mass Air Flow) sensor to determine how much air is being pulled into the intake manifold. - Howdy all! I hope you’re all having a great Monday! Figured I would ask this question in here. A whole complete TPI rig doesn't even cost that much. It bogs down for about 1 second then takes off. C3 Tech/Performance; C3 General; C3s for Sale/Wanted; C3 Parts for Sale/Wanted; C3 Vendor for Sale; C1 & C2 Corvettes, 1953 - 1967. I would love to have it in a 4x4 S10. - I've run about C4 General Discussion - 1991 TPI no injector pulse help - I am having a problem with my TPI vette, so to get started, the car started running like it was missing on most cylinders, normally associated with half calapsed or broken rings. I also Our 22lb TPI Fuel Injectors for Corvette Camaro L98 5. $115. Each C4 Tech/Performance - TPI vortec intake!!! - A few weeks back I remember reading a question from a member asking if Scoggin Dickey was the only vendor selling a TPI vortec base intake well the new JEGS has an Edelbrock unit for vortec heads!!! just thought I'd throw that out since I can't find the original thread. Reply TPI Thottle repairworn shaft (vettek50) rebuilt unit 324. Staff member. It started with some leaky rebuilt Bosch3 injectors. C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine o2 sensor location, 91 tpi eng. com has a manifold that bolts right up but it's $400. It's now blowing whitish smoke and C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine 1991 L98 TPI to Carb? Reply Subscribe . 2024 BMW G60 i5 Sedan xDrive40 . C4 Corvettes, 1984 - 1996; C4 Tech/Performance; Tuning for TPI; C4 Tech/Performance L98 Corvette and LT1 Corvette Technical C4 Tech/Performance - TPI fuel line removal C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine TPI fuel line removal. 0L F-body (Camaro/Firebird) MAF TPI 1985 2. Turn the key on 22, start the car “hard to start” 22, rev it up and it completely stalls as if C4 Tech/Performance - 88 TPI Intake Torque Specs - Does anyone have the correct torque specs for the intake manifold bolts on a 1988 TPI engine? C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine 88 TPI Intake Torque Specs. In loving memory of lost CorvetteForum Brothers and Sisters; C8 Corvette. Now it start not problem. Can anyone help me with these, please? C4 Tech/Performance - TPI to LT1 Intake conversion - Hi, I need help!! I want to go through with the L98 to LT1 Intake conversion (I currently have a 1989 corvette with 350 TPI). C4 Tech/Performance - HELP from the TPI Gods! Guidance on timing. I thought it was supposed to be 36psi. 791 @ 98MPH K&N Air Filter w/ Opened Air Box, Hedman LT Headers, Borla ProXS Mufflers, Polished SS LT1 Tips, AIR While there were few who questioned the technological superiority of the 1984 C4 over earlier generations of Corvette, it’s lack of robust horsepower and outright performance left many questioning this new version of America’s most beloved sports car. The store will not work correctly in the case when cookies are disabled. Thread Tools Search this Thread C4 Tech/Performance - TPI Injectors - I need TPI injectors. AUS1891. Thread C4 Tech/Performance - TPI fuel pressure - Need some ideas. Any other tips on putting this back together would be great. C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine '85 TPI Starting Issue. 7L TPI L98. Well, I ended up starting a rock crawler project out of a K5 Blazer. This will ensure that the engine isn’t C4 Tech/Performance - Most power from L98 TPI - Hey all, I know this isn't a popular topic and that there is a strong contingent of well educated members here who have little to no interest and perhaps even some disdain for the motivations behind this question, but nonetheless this is the best place to ask it. It C4 Tech/Performance - Help - 1987 C4 TPI - Rough Warm/Hot Start - Hello all, I hope you’re having a great summer! I’ve been fighting a bit of a warm start issue that so far I haven’t quite nailed down. 125 1. Color. I have all of the bolts out, but the runners don't seem to want to disengage from the manifold. The TPI is not designed for high RPM. In other words I have a swapped bodies from a 1988 C4 , ifs, and irs, and an L98 Corvette with a Chevy Truck body masking its true C4 identity. I have gone through the entire TPI unit. He started to change the intake over to a GM TPI. I replaced the spark plugs, wires, distributor cap and rotor, and it now idles around 700rpm. and the other half because its a Corvette. Our kits are equipped with essential features, such as: • HO systems producing 8-10+ psi of boost, 55-75%+ HP • P600B or D-1 standard TPI differences 85-92. I would like to know if the 4 wiring is direct to the harness TPI (vett4cw) If you have a bigger TB on the car,they are notorious for throwing a MAF code 33 due to the fact they are tricky to adjust the minimum air spoeed and TPS in sync. 07s with 3000 conv/shift kit. FP good and holds Dist is in right All switches relays and injectors are brand newAll ignition components are new, all grounds in place (99% sure). C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine TPI Thottle repairworn shaft. what are the best for a daily driver, all stock motor? internet research shows: Holly $$ Accel $ SMP $$$$ I have the original multiteks, which I can not even find I need something dependable, and I usually try to stick with OEM parts any brands to AVOID C4 Tech/Performance - Best Camshaft/intake Choice for 1986 tpi - Hello, as the title says I have a 1986 tpi corvette which currently is knocking. Add Vehicle. I have the wire harness, the computer, intake, rails everything. Stock tune to boot! A local head porter got his 91 w/113s into low C4 Tech/Performance - proper idle speed for an '89 L98 TPI? - My 1989 TPI Corvette seems to me to have a very low idle speed, although I do not know what the idle speed should be. 565 112 lsa 106 icl I'm running a mildly ported stock tpi intake, 22# injectors, edelbrock 60879 C4 Tech/Performance - Converting From TPI to Holley Sniper - Hello Everyone, I have finally decided to swap out my complete tpi system in my 1985 Coupe to a Holley Sniper stand alone system. (I have no idea what the TPI came off). C4 Tech/Performance - Chassis Dyno Results - 1990 L98 TPI 350 in C4 Convertible - Hello Everyone, I bought a Dark Red Metallic 1990 Corvette Convertible with 22,865 miles on it, back on June 9th. Best heads for the $$$ - L98 full ported TPI rebuilding to 383. Shop By Brand; Buy One / Get One Specials; Have It Installed; 1985-1988 C4 TPI Throttle Body Gasket - GM - OEM Number(s) (10105379) 1985-1988 TPI Throttle Body Gasket replacement. Thread Tools Search this Thread 03-22-2009 | 05:07 PM C4 Tech/Performance - 86 TPI-Injectors not firing - . Jump to Latest From my experiences the TPI manifold is junk. SKU. Jun 19, 2014 #3 theres several obvious and a couple less obvious things to check,start by pulling trouble codes, checking for loose electrical C4 Tech/Performance - zz6 Fast Burn Heads with First TPI? - As the title suggest I'm wondering if I can, and if it's worth running ZZ6 Fast Burn Heads with a First TPI on my L98. Whatever its cam Performance improvement plan for old 1990 Corvette TPI while retaining a basically stock appearance. Search. having a heads/cam car with the TPI manifold will hold back the power you could be making with a super ram or mini ram intake. - I while ago, I built this engine to be put in a car that was not yet determined. Will 24 lb injectors do any good with a stock tune and stock TPI? What would the pros and cons be? The reason I ask is because my stock injectors need rebuilt or cleaned. thanks for the replies everyone C4 Tech/Performance - Any of y'all fit vortec heads under your TPI? - Figured this would be the place to ask more questions about TPI. Thats why its best to choose what way you wanna go now. C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine L98 C4 Tech/Performance - L98 TPI to Carb - Who has switched over from TPI to a Carb and did it make a difference? Were you able to pick up RPM's with the switch, I know I will lose mpg's but I put less than 500 miles on my vette last year. 7L TPI VIN 8 Engine Schematic 1990-95 5. C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine TPI Batch Fire Question. Parked it during the winter for maybe 6 months. I have checked the spark (good) Sometimes, us Corvette folk know more than the local Chevy partsman. 00. Here is my burning question. - Any one have a pictorial of the plug wire routing for a '89-'91 L98/TPI? Looking at a very low mileage car but the plug wire are routed above the exh manifolds along the The C4 tpi on the other hand used the old bolt pattern and alum. 7L TPI Intake Air Duct Bellow 86 87 88 Removed from a 1985 C4 corvette intake tube in good used condition please check inspect photos for exact condition Please verify fitment before purchase C4 General Discussion - Crossfire v TPI - For a DD is there much difference between the two, pro's and con's and any other thoughts please :bigears Just looking at this on Ebay for a DD so I can keep the 1990 6sp in good C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine Most power from L98 TPI. I have been contemplating replacing all of mine with black allen-head bolts and C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine There is a new "TPI" intake on the Out of the box, the FIRST will add a few hundred RPM over a typical aftermarket LTR TPI system (it gave me 300 rpm over an extensively ported GM base and hogged out SLP runners), This is an ATI / Procharger C4 2 Core Air-to-Air Intercooled HO Supercharger Kit with a P600B head unit and standard 6 rib pulley setup for the Corvette C4 L98 TPI 1985-1991 which will get you a 55-75% horsepower gain on 8-12+ psi of boost! C4 Tech/Performance - `86-88 TPI eprom part #? C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine `86-88 TPI eprom part #? Reply Subscribe . C4 Tech/Performance - Fitech 38350 tpi Installed - Just installed the Fitech Tpi and figured I'd make a post when I was researching about it I couldn't find much info on the install except a few threads on this forum. C4 Corvette TPI Engine Upgrade Opinions. Two of them are below 10 ohms. Reply 1985-1989 Corvette C4 5. Part Brand. Each has it's pitfalls, and each has it's challenges. C4 Tech/Performance - TPI Rough Idle - 1989 TPI Rough Idle. 1 Year. Thread Tools Search this Thread 12-12-2002 | 08:08 PM Position Switch (TPS) on the early C4 Corvette TPI systems. I am also curious about the 'water', doesn't the TPI system have some sort of C4 Tech/Performance - L98 TPI MAF efi wire harness - . grumpyvette Administrator. Thread Tools Search this Thread 12-16-2014 | 10:16 PM C4 Tech/Performance - Anyone running TPIS's mini ram intake on an L98? C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine tpi 421 vette. I have purchased a bored TPI 52mm throttle body for use with this. 71- MFI Engine Schematic (Page 1 of 2) 85 CORVETTE STA R R MOTOR,' SOLENOID CHASSIS SCHEMATIC HOT AT ALL TIMES STATOR DIAGRAM HOT AT ALL TIMES FUSIBLE HOT AT ALL TIMES FUSIBLE LINK START IGN TION C4 Tech/Performance - IAC - Idle Air Control valve - Hi, I am having some difficulty tracking down some part numbers (genuine and aftermarket) for the IAC for my 1989 C4 Corvette 5. The problem is when accelerating from around 60mph to over take another car and around 1600 rpm the C4 Tech/Performance - Vortec block with TPI - I’m currently using a stock 96 5. I have been looking at a Find 56 used Chevrolet Corvette in Freeport, NY as low as $27,900 on Carsforsale. Select New Vehicle. Sales & Service Teams now available 7 days a week! Toggle Nav Cart Product In typical TPI fashion, torque production from the L98 exceeded 350 lbs-ft from 2800 rpm to 4900 rpm. Reply The TPI will drop the horsepower output, but you will still have 400+ lbs of torque. Yesterday I bought a 84 vette. 7L TPI Intake Air Duct Bellow 86 87 88 Removed from a 1985 C4 corvette intake tube in good used condition please check inspect photos for exact condition Please verify fitment before purchase 1985-1989 Corvette C4 5. When you come across others, post 'em and I'll ProCharger offers the ultimate power adder solution for your 1991-1985 Corvette C4 TPI (L98). It's an 84 with a TPI. item 8 85-88 Corvette TPI PLENUM 86 87 92 350 Trans Am Camaro C4 GTA Iroc Z28 14081006 85-88 Corvette TPI PLENUM 86 87 92 350 Trans Am Camaro C4 GTA Iroc Z28 14081006. New MAF, New ECM, New relays. Modifications to the system are not required, just bolt in. With so C4 General Discussion - 85 TPI vette stalls when put into gear. The injectors were leaking fuel into the cylinders. C4 Tech/Performance - Coolant temperature sensor on 1987 with TPI - With digital gauges. These steps apply specifically to the 1985 model year, and it general to other years. It was driving great for a long time - years. Item description from the seller. C4 Corvette Removing the Plenum/Runners (TPI) Jump to Latest You'll get better at it Dan,sunday we took Punch's TPI and intake apart,cleaned and painted the runners and manifold,removed radiator etc and changed the cam and timing chain,re assembled and started the car the next day. NOTE: The Minimum Idle Speed sequence outlined in this paper is taken directly from the 1985 and 1986 GM Corvette Service C4 Tech/Performance - TPI firing order C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine TPI firing order. I'm from Midland, MI. Two of them C4 Tech/Performance - FAST EFI XFI Engine Management System GM Chevy L98 TPI - i Came thru this Log In; Register; Forums. 5 ft/lbs. C4TPI Discussion starter 58 posts · Joined 2011 Add to quote; Only show this user #1 · May 10, 2011. The engine is a 350 bored . 30 with AFR heads, a computer friendly Crane Cam, C4 Tech/Performance - Help with squeezing power out of 1991 TPI vette - I just bought my first sports car in my life and its a 1991 Corvette base model. 470 round entry 1. I have a 75 c3. 960x1. TPI C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine MiniRam Vs. The person that did the engine swap has given up on trying to get the tune right is there somewhere in the Chicago area that can tune an OBD I SD car? C4 Tech/Performance - ‘91 l98 corvette fuel injector recommendations - Hey guys, I have a ‘91 l98 tpi corvette and I think I might need to get new fuel injectors. - Hello Corvette owners, I’m new here today. I have the pin outs, and a lot of wiring diagrams and all that going on. 00$ any jobber but is there a kit? Reply Like 06-11 C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine ZZ4 with stock TPI question. 7 V8 (1993) vs Chevrolet Corvette C4 ZR-1 (1988) vs Chevrolet Corvette C4 L98 Convertible (1985) Chevrolet Corvette C4 5. On the runners there are some hidden bolts that can be hard to see. The condition of the wiring under the hood is a nightmare because the car sat for years and rats had a feast on it. I like to get a little more horse power out of it. I think i may need anew thermo C4 General Discussion - TPI Air foil - Anybody install these airfoil things? Or the smooth air tube from the MAF sensor? They seem to make sense by making airflow less restricted or dead ended at the tpi. Long time members here might be familiar with my car as it was probably one of the better running stock heads/cam TPI cars. I’ve hit a stump as to which headers I can use. As alwaysthanking you all in advance for 1985-1989 Corvette C4 TPI Intake Air Duct Bellow. He has ASM siemesed runners which are bulkier C4 General Discussion - 85 TPI Fuel Pressure Test - I will be changing the fuel injectors this week and before I took it all apart, I wanted to do a fuel pressure test. Starts on cold start injector, then dies. I was driving yesterday and mid driving the vette started acting funny (directly after I hit a C4 Tech/Performance - TPI progressive throttle linkage? - I read that at some point GM switched the L98 Vette to a progressive throttle, so it would not be so sensitive. Save $30,345 right now on a Chevrolet Corvette on CarGurus. Intros; In Memoriam. I just want an C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine 1991 c4 efi to carb swap. Hunting idle mostly. eBay item number: C4 Tech/Performance - '85 TPI Starting Issue - I have a starting problem with my stock 1985 C4. C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine Converting From TPI to Holley Sniper. Intros; In Memoriam . C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine TPI Fuel pressure. Even down at 2500 rpm, the TPI motor thumped out 340 lbs-ft. I'm also using the 730 ECm used in 92 Z28 TPI's. Runs fine. Product Experts Available. They don't run as smooth as the 24 lb I have fabricated a custom 1955 truck frame, C notched it, & then taken the C4 chassis and rolled it under my now lowered 55 pick up. Rear end has 3. C4 Tech/Performance - Maximum horsepower for TPI - What is the maximum horsepower that can be supported by the stock TPI system? I have read several threads C4 Tech/Performance - 1984 TBI to TPI Swap - Hi everyone - I'm in the process of converting my 1984 over to TPI. 7 Engine TPI 01227165 | Corvette Recycling - OEM Used Corvette Parts. The SES flashed a 21 (throttle position sensor voltage high), a 34 (MAF sensor C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine Anyone used these intakes before? and it does not look any different from the normal throttle body when done. $219. I also C4 Tech/Performance - 1985 Corvette TPI Throttle Problem. C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine intake swap tpi to carb. Thread C4 Tech/Performance - Distributor wiring question 1991 tpi - I need to know on a TPI (91) distrbutor there is a wiring pigtail from the dist. It has an aggressive cam in it and I am having some issues with the idle. heads either way you are still at the mercy of the stock ecm which is slow and a pain to tune unless you buy the emulator. 090x1. Jump to Latest 73K views 77 replies 13 participants last post by konadale Apr 8, 2019. The car has 89k on it, basically in perfect condition, garage kept for all those years. HELP!! - Hey guys, my name is Jason. C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine L98 Tpi tuning and EPROM chip. Log In; Register; Forums. this engine is not going in a C4 but it will be controlled by a TPI ECM. C4 Tech/Performance - L98 TPI Throttle Position Sensor - Can someone please assist and tell me the correct specification for the voltage on the TPS signal wire? I have seen values from 0. I noticed there wasn't a MAF. Thread Tools I've read that the stock TPI runners are ~19" in length while the FIRST TPI runners are ~15" in length with significantly more cross section. The runners C4 Tech/Performance - New 383 TPI build and dyno results - Recently I installed a new 383 in my 91. # 5 & #7 Should be spaced at least 1/2 inch apart those ignition plug wires. Nothing left to replace on the upper end. I have a 1986 L98 newly rebuilt and almost stock engine, in a C3. Any of y'all running vortec heads with TPI? I know sdpc2000. com®. 525V to 0. Well, first off I know nothing about turbos. Starts right back up immediately and idles perfect but wants to act like the engine is about to die again until it acts like the fuel pump has quit. So I thought a cam swap would be a good idea. I rebuilt the engine, reinstalled it, and nothing. Proudly Accepting. cap(3 wire). C4 Tech/Performance - TPS Voltage - HELP! - Hey Everyone, I am at a loss with setting my TPS voltage. The SLP Cold-Air Induction Package is likely the most popular option for those seeking to enhance their C4´s performance through the installation of a CAI. Although the actual pace cars were painted a bright yellow and wore special “Official Pace Car” badges, General Motors deemed that every Corvette convertible built in 1986 would be a street-going Indy pacer, C4 Tech/Performance - Will an '88 ESC module work on an '86L TPI? - HELP! Thank you for viewing my post. Thread Tools Search this Thread 05-15-2010 | 11:46 PM C4 Tech/Performance - 1990 L98 Flow numbers for stock TPI v Edelbrock Hi-Flow & Extrude Honed? - Hello, What are the flow numbers for the stock intake manifold manifold, runners, plenum and throttle body versus that of a complete extrude honed Edelbrock High Flow Manifold, Runners, Plenum and, (not extrude honed) 58mm C4 Tech/Performance - 89 350 tpi engine problem - Hi, hope you guys can help me. 85v. I'm mostly interested in replacing the linkage's worn bushing/bearing and installing a heavier duty return spring. I Finally decided to just put a NEW SET in of the Bosch 3 C4 Tech/Performance - LS1 harness/ecu on TPI? C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine LS1 harness/ecu on TPI? Reply Subscribe . 280 exit * Runners only The Edelbrock and TPIS TPI intake base are both made by Edelbrock. If you watch forums you maybe able to find a newer used system for a good price as they are switching to the dominator or terminator x systems. Universal Fitment. Now, thermostat opens C4 Tech/Performance - C4 L98 head and cam combo for stock TPI - Well this post is the third try since my phone is going crazy and I'll make it short. Its more a low to mid range engine with lots of torque. Will run after being cranked sveral times. When I'm C4 Tech/Performance - L98 TPI rebuilding to 383. Seller assumes all responsibility for this listing. 71- TPI VIN 8 Engine Schematic 1991 5. Scat assembly with -10cc dish/ 10. TheStef, I definitely have to admit that an engine swap looks like a much better solution if I do want to go TPI (or LT1 or LT4), as mentioned. Reply C4 Tech/Performance - FIRST TPI Planning - Before I start, I promise I've used the search feature thoroughly. I'm considering converting the TPI to a carburetor, but I,m finding that hood clearance is going C4 Tech/Performance - '85 TPI Starting Issue - I have a starting problem with my stock 1985 C4. 7L TPI Intake Air C4 Tech/Performance - Batch fire TPI question - On a batch fire system 4 injectors fire at the same time right. So I ease it home and check the fuel injector ohms. 1985-1988 TPI Throttle Body Gasket. I answered what was asked, directly and factually. okay, so i know i have lots of questions, but this is the best place to ask 'em. I got an eagle 383 kit from summit with -5cc flat tops and edelbrock e street 64cc heads with the right valve springs for a HR. Scenario 1 – Starts C4 Tech/Performance - TPI Batch Fire Question - As most of us know, our beloved TPI systems are a batch fire system, meaning that when the injectors are triggered, they do so in groups of 2-4-6-8 and 1-3-5-7. It's specs are 219/227 . 5: 1 with thin C4 Tech/Performance - How to set timing on 89 tpi - I have my son's 89 tpi vette back together and did initial timing it is running now pretty good but need to set it at 6 degrees with a timing light. Other Part Number. 14081891. C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine TPI code 36. I would like a complete or good walk through if possible. 64cc . If you have any other C4 Tech/Performance - TPI Fuel pressure - I have a newly rebuilt '86 TPI with Maf. Melting Slicks . Currently there is no wiring harness. What GPH do I need for a stock Dedicated to the Chevrolet Corvette Model Years 1984-1996. My car is stalling after driving for 5-10 miles down the road. Anyone know if regular truck headers will clear c4 corvette firewall? Also any other tips I recently bought an 86E TPI and its got an interesting set of issues, especially with idle. C4 Tech/Performance - Crossfire to TPI change over. Listening to forum This system is a direct factory fit for 1992 and later C4 Corvettes, and will fit early run C4 cars with minor adapting. They have a flow This package is an easy bolt-on package that will provide a very noticeable seat of the pants punch in horsepower and torque for Corvette owners. Joined: Mar 2002. For those of you that have or had this engine, what is it reliability? C4 General Discussion General C4 Corvette Discussion not covered in Tech. The car does not like to start cold. Reply and it becomes the same nightmare that TPI becomes to the guy that sees only wires and sensors, and vaguely knows where the computer is and what it actually does. What is actually different? Can I do this on my 85? C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine best heads to use on stock 350 l98 By the time you are all done that you may as well just stay TPI cause you just dropped a pile of $$. This kit by SLP is Browse the best September 2024 deals on Chevrolet Corvette vehicles for sale in Roosevelt, NY. C4 Tech/Performance - 89 TPI Conversion to speed density - Hey guys, I am switching my 89 over to speed density. C4 Tech/Performance - MiniRam Vs. All the pumps I see in the catalog say not to use with fuel injection. Featured. Recent Searches. Reply Subscribe . With the ZZ4, stock TPI, 3. 75 runners made by AZSpeed (old Arizona Speed & Marine) or the TPIS large tube runners (which AZSpeed claims they make for TPIS) on their cars. The first tpi will work with the speed density set up no problem, and also works great with the 383 engine. 8 more horsepower at 4750 RPM. The car is a 1980 Camaro, with an '86 Corvette TPI I tested my TPS voltage at WOT (between the top and middle wire), and came up with 3. 7L ME-I VIN J Engine Schematic 1992-95 5. slap a mini-ram on a low cpr stock 350 with stock heads and a stock cam and a stock C3 General - c4 tpi on a c3 - Hello All, I'm fairly new to the Corvette ownership. In loving memory of lost CorvetteForum Brothers and Sisters ; C8 Corvette. Had the cooling system flushed and 180 degree thermostat installed to replace original 190. Found that out on my 87 vert in 2007. Save $26,942 right now on a 2005 Chevrolet Corvette on CarGurus. RACE ON!!! Reply Like 07-12-2006 | 08:00 PM C4 Tech/Performance - 1985 L98 TPI Fine Tuning What's Your Timing Set At? - 1985 L98 TPI Fine Tuning - What's Your Timing Set At? It's a new/used Vette for me. C4 Tech/Performance - TPI Intake Manifold Gasket C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine TPI Intake Manifold Gasket. Offering C4 Vette forums, club directory, events calendar, research tools, shopping center, VIN Decoder Though the TPI system is not a sequential fuel injection system, and therefore all 4 injectors on each side fire at once, I suggest marking the locations (from 1-8) of the C4 Tech/Performance - TPI code 36 - 1989 TPI motor. Everyone's path is a little different, so I'm seeking some clarification on mine specifically. Jump to Latest 6K views 11 replies the stock TPI heads flow about 200cfm-220cfm (AFTER MILD PORT WORK)depending on the year and the stock TPI intake in un -modded form flows less than 200cfm. 0i Turbo (1993) vs Chevrolet Corvette C4 Grand Sport (1996) Latest Car Specs. What is actually different? Can I do this on my 85? C4 Corvettes, 1984 - 1996; C4 Tech/Performance; C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External that happens to be small cap and remote coil. The complete cam package should run around Find 58 used Chevrolet Corvette in Selden, NY as low as $18,990 on Carsforsale. to the dist. Do you want a 6500 RPM screamer. The terms MAF & MAP refer to the way (actually to the sensors) air flow into the engine is measured. It would not hold pressure and leaked down right away. Account (0) 801-791-9020 Go Back All Categories Categories C3 Corvette C3 Corvette All C3 Corvette C3 Body C3 Body All C3 Body C3 Rear Bumpers & Components C4 Tech/Performance - 1990 TPI prom? - I have been plaged with TPI problems and have changed about all the sensors including a rebuilt ECU and 02 sensor. I was excited, but after I test drove it and bought it I was kind of upset C4 Tech/Performance - `86-88 TPI eprom part #? - Anyone know what the compatible part numbers are for a memcal/prom for a TPI -7165/ -8259 ECM are??? thank you in advance! :flag 1990 5. C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine C3 Tech/Performance - Question about L98 C4 TPI EFI conversion - I have an opportunity to buy a complete soup-to-nuts C4 L98 TPI EFI setup for $1000. I don’t know what size or lb I need and I don’t really care to “upgrade”. C4 Corvette Forums. C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine Batch fire TPI question. C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine MiniRam Vs. Add to Wish List Add to Compare. Im still new to them so I wanted to know from start to finish on what I need and how to install them. When creating our Corvette mod lists, we focused on three areas: Performance - Any cold-air intake that gets our stamp of approval needs to add power/torque while maintaining factory-like reliability. I get everything together go to start the car and fuel floods the top of the intake dripping to the ground. Since I've had the vehicle I have noticed a throttle hesitation when I hit it hard at takeoff. Sponsored by: Reliability of the L98 TPI. 8 hp and 12. 4473. If you have other modifications to the car such as headers C4 Tech/Performance - proper idle speed for an '89 L98 TPI? - My 1989 TPI Corvette seems to me to have a very low idle speed, although I do not know what the idle speed should be. I have a 1990 stock L98 TPI and just fitted a new set of Bosch lll injectors. Looking at 219 cam or LT4 hotcam. It has a new 350 engine. Book says it should be 6 BTC, but would like to know if that is C4 Corvette Forums. heads flow practically identical numbers and the cam was almost as similar. Injectors not turning C4 Tech/Performance - Custom TPI plate - Looking for a source for custom TPI plates. The car runs, but if you throttle hard, it sucks a lot of air, kicks down a gear, makes a ton of muffler noise, and doesn't accelerate despite the attempted effort. Stock TPI Manifold base 6. C4 Tech/Performance; C4 General Discussion; C4 ZR-1 Discussion; C4s for Sale/Wanted; C4 Parts for Sale/Wanted; C4 Vendor for Sale; C3 Corvettes, 1968 - 1982. Select Year. Thread Tools Search this Thread C4 Tech/Performance - 1991 TPI to Carb Swap??? - I recently acquired a 1991 Corvette, with TPi in a trade. I would recommend a 88-90 Corvette. Can anyone help me with these, please? C4 Tech/Performance - 1985 tpi fuel pressure issues - I have had this car for 3 weeks now. Currently C4 Tech/Performance - Tuning for TPI - Hello, I have a Speed Density car I put a new motor in. 71- MFI Engine Schematic (Page 2 of 2) 1984-85 Starting, Charging, Fuel Pump, Cooling Fans Chassis Schematics C4 Tech/Performance - CFI vs. Thread Tools Search this Thread 11-15-2005 | 05:29 Doing the TPI paper-clip trick, I jumped the A and B terminals of the assembly-line data link (ALDL) under the dash. Later model years do not have adjustable TPS’s. Also wiring from the ignition module inside the dist (4 wire)to the car wiring harness. 47 to 1. Toggle navigation. Likes: 117. Climb all over the TPI owner that answered first, not the poor Crossfire guy. I have a brand new rebuilt 4 bolt main small block 350 that I picked up (dropped the pan and checked bearings to make sure it was in fact newly rebuilt) and I have some C4 Tech/Performance - 1985 Vette TPI system problem - Well its been Since Feb that i've been working this car over, i'm just about to go Carb rather than continue to work thet th TPI system but imma give it one last try and hopefully one of you guys can help me out. New injectors, new EGR solenoid / EGR New MAF, cap / rotor. Build quality - A good cold-air intake for your C4 Corvette will not have sloppy welds, cheap connectors, or flimsy plastic. which is pretty much a This is an ATI / Procharger C4 HO Supercharger Kit with a P600B head unit and standard 6 rib pulley setup for the Corvette C4 L98 TPI 1985-1991 which will get you a 40%+ horsepower gain on 6+ psi of boost! This system does not include the fuel system, but can be added for around $300. AFAIK there are three styles of TPI plenums, 85-88, one year 1989, then 1990-1991 I understand that the 1990-1991 have extra bungs for the MAP sensor for speed density setups. I also am getting a code 23 and I found out that the TBI cooling is bypassed, heater core to the manifold instead of the TPI. Posts: 3,067. My compression will be 10. thats the reason im in the C4 section. Any C4 Tech/Performance - Fuel rail leaking everywhere 85 tpi - Ok heres the deal, I've had the engine out for a few months to change cam and new valve guides, one time of many I've had the engine out. Free shipping. It's now blowing whitish smoke and C4 Tech/Performance - Best fuel injectors for 1990 TPI - On my way home from filling up the tank tonight my 1990 TPI starts bogging down on acceleration. Manufacturer Warranty. I have had a 1985 Corvette for about 1 month now. TPIS does go With the largest, most reliable power gains on pump gas, ProCharger-powered 1985-1991 C4 TPI Corvettes dominate both on the street and on the strip!! Backed by the strength and support of the industry leader, ProCharger offers C4 General Discussion - Crossfire v TPI Even though they are classics ( the 1st C4 and the 1st Corvette to have a Modern Sports car look) But i would never ever buy a 1st yr of any Model. but the engine will not idle smothly unless I disconect the 02 sensor. TPI. Got it going have been driving it now lately daily for maybe 6 months. These steps apply specifically to the 1985 model year, and in general to other years. At least it's not stalling anymore, but the idle still hunts all over. In late June, just before the July 4th holiday weekend, I replaced the 11-year 8-month old tires that came with the car, C4 Tech/Performance - zz6 Fast Burn Heads with First TPI? - As the title suggest I'm wondering if I can, and if it's worth running ZZ6 Fast Burn Heads with a First TPI on my L98. Cranks fine. Before that, fan turned on at 185 and after thermostat opened, gauge indicated steady state temperature around 198F. The differences in the 85-88 (other than cosmetic) C4 General Discussion - TPI Throttle Body Rebuild? - Anybody done their own throttle body rebuild? I'm not talking about just cleaning it up and/or doing a gasket swap. Chevrolet listened to the criticisms and quickly began to revamp the Corvette platform to become a more competitive C4 Tech/Performance - Whats the best Cam for stock tpi ? - I have 1987 vette that I pulled the engine out of. Manufacturer Part Number. :bigears sources, links or part # s? The 1986 Corvette (yellow) and the 1978 Corvette (black) were the first two Corvettes ever to serve as a pace car at the Indianapolis 500. C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal C4 Tech/Performance - TPI intake air foil - worth $30 on 88 L98? - Anyone have any experience or knowledge of these intake air foils that places like Ecklers sell for $30? Apparenly it just bolts in the opening of the throttle body and they claim it adds 11. Shop restoration car parts and accessories at Ecklers. Perfect for engine break-in, longevity testing as well as tuning. TPI - Just wondering if anyone knows just how much torque is lost in the low end when going from a stock TPI to a TPIS Miniram. Later models do not have adjustable TPS's. C4 Tech/Performance - Help Removing TPI Intake Runners - I need help from somebody who has done this. Thread Tools Search this Thread 12-29-2007 C4 Tech/Performance - L98 TPI to Carb - Who has switched over from TPI to a Carb and did it make a difference? Were you able to pick up RPM's with the switch, I know I will lose mpg's but I put less than 500 miles on my vette last year. We ranked the C4 This page shows the most common vacuum line diagrams for stock TPI setups: The diagram above is for 1985-1986 5. With a TPIS LT TPI intake, notcam, and headers, he's putting down 320hp/400TQ at the wheels. From what I C4 Tech/Performance - o2 sensor location, 91 tpi eng - Where is the location of the o2 sensor, its a 91 L98, tpi. 7 350 sbc with vortec heads and Scoggin Dickey manifold to replace my 86 block. Reply Subscribe The Key reason the the 88-92 L98 350 TPI motors made 245hp and the 93 LT1 made 275hp is that intake. Also how much boost or what sized turbo can I C4 Tech/Performance - 24 lb injectors on a stock tpi? 1988 L98 engine - I have a stock 1988 L98 engine. On a friends TPI IROC we just did a H/C 350 on. I've been doing some reading on the forum about fuel injectors but all the threads Chevrolet Corvette C4 5. Usually u should by the 3rd yr and up. During its lifetime, this engine underwent minor modifications to tweak its horsepower. 99% stock. I just C4 Tech/Performance - o2 sensor location, 91 tpi eng - Where is the location of the o2 sensor, its a 91 L98, tpi. 200 exit TPIS Big Mouth base 6. 10) Adjustable fuel pressure regulator. GM were $200 ea, Rochester Parts from Advance Auto Parts were less than While the L83 did offer better efficiency and performance over the Corvette V8s from the mid 1970s, in 1984 its 205 horsepower wasn’t the lofty number that Corvette fans hoped for in the new C4. I am having fuel issues. Thread Tools Search this Thread 12-05-2019 | 11:37 PM C4 Tech/Performance - TPI fuel line sizes, converting to -an - What sizes are the feed, return, and vapor lines on tpi cars? C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine TPI fuel line sizes, converting C4 Tech/Performance - TPI Turbocharger - Ok, I have a 1989 L98 TPI corvette and I want to install a single turbocharger on it. In 1994, Corvette went back to the MAF C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine 85 tpi bolt torque specs stab in the dark at a number I didn't know. Thread Tools I am unsure which aluminum heads work with that TPI intake, but i bet that is where all the possibilities lie. This tech paper will discuss the procedure for correct adjustment of the Minimum Idle Speed and for adjustment of the Throttle Position Switch (TPS) on the early C4 Corvette I looked into this engine a couple of years ago for a replacement in my 85 and I was told the engine was not designed for fuel injection, although I am sure the TPI setup would bolt Still, the TPI motoroffered impressive low-speed torque, with the curve exceeding 350 lb-ftfrom 2,500 rpm to 4,900 rpm and topping 375 lb-ft from 3,200 rpm to4,700 rpm. C4 Tech/Performance - Best fuel injectors for 1990 TPI - On my way home from filling up the tank tonight my 1990 TPI starts bogging down on acceleration. air speed isnt set,it will throw this code and run poorly. Each injector is optimized in-house and flow-matched to within ±1% for precision. CFI has its limits with hp and whats out there as far as bolt ons are limited, and the TPI is an C4 Tech/Performance - Torque spec and sequence TPI manifold - Can anyone give me the correct torque spec and sequence for 85 TPI manifold? Any other tips on putting this back together would be great. Hoping to lean on the experience of the group here, maybe help point me in the right direction. Are we 100% sure the recommended ESC module #16038331 will fit on an '86 TPI? The stock modules are different from '85-86 and '87-89 Corvettes. I read there was a brown wire with a black stripe that comes from the main loom along the firewall by the heater core C4 Tech/Performance - L98 TPI Throttle Position Sensor - Can someone please assist and tell me the correct specification for the voltage on the TPS signal wire? I have seen values from 0. How can 22lb C4 L98 Bosch D3 Corvette 350 TPi . 6:1 roller rockers , on almost any decent 180-200cc aftermarket aluminum heads like TRICK FLOW,EDELBROCK,OR BRODIX as the combo really C4 Tech/Performance - 88 TPI Intake Torque Specs - Does anyone have the correct torque specs for the intake manifold bolts on a 1988 TPI engine? I have come across some conflicting numbers and just want to torque them correctly before I install the plenum and the runners. etc, etc, etc. New Member. C1 & C2 Corvettes; C1 & C4 Tech/Performance - 85 tpi - no throttle response - popping - Hello All, How would you troubleshoot this just briefly is ok. I was driving yesterday and mid driving the vette started acting funny (directly after I hit a C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine best heads to use on stock 350 l98 where it should be for the flow #s advertised. Sales & Service Teams now available 7 days a week! Toggle Nav Cart Product Experts Available 877-305-8974. Browse the best January 2024 deals on 2005 Chevrolet Corvette vehicles for sale in New York. TPiS Miniram advice. Even with a stock TB,if the TPS isnt adjusted right and the min. There is a lot of head choices. Im the only C4 Corvette in my area that I know of lol atriot: 86 C4 Corvette - 14. I have a 1985 C4, it’s a TPI unit with the automatic 700r4. The Tuned Port Injection (TPI) improved 350 small-block’s fuel While the L83 did offer better efficiency and performance over the Corvette V8s from the mid 1970s, in 1984 its 205 horsepower wasn’t the lofty number that Corvette fans hoped for in the new C4. C4 Tech/Performance - IAC - Idle Air Control valve - Hi, I am having some difficulty tracking down some part numbers (genuine and aftermarket) for the IAC for my 1989 C4 Corvette 5. Reply Subscribe C4 Tech/Performance - intake swap tpi to carb - wont to put a crab on my89 c4 take off tpi put crab system what you need to do :willy:it right: Log In; Register; Forums. Add to Cart. There are to many threads on here where you hear the same old story. . C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine 03-02-2015, 08:13 PM How-Tos on this Topic (TPS) on the early C4 Corvette TPI systems. I realize HP gains are not much, but is it even a noticeable upgrade as far as performance goes? Improvements on C4 Tech/Performance - TPI progressive throttle linkage? - I read that at some point GM switched the L98 Vette to a progressive throttle, so it would not be so sensitive. Looking at the package, we are going to let the engine breath much easier, remove a couple of the "dams" in the engine robbing you of horsepower, and properly set up the engine for maximum performance. i bought the car running and one day it just Part Number: 16198259 C4 Corvette 1986-1989 ECM 5. At idle, engine cold, it reads a steady 40psi. Thread Tools Search this Thread 04-14-2003 | 12:48 AM C4 Tech/Performance - TPI Coolant Bypass???? - I just picked up another 85 vette, Z51 car, after checking a few things I noticed it has a custom chip, 180 thermostat, and K&N filter. Shop millions of cars from over 22,500 dealers and find the perfect car. The MAF (Mass Air Flow sensor) was used on early L98s, the MAP was used on late L98s and early LT1s and a C4 Tech/Performance - TPI Throttle Cable Bracket - Note: I am here from the C3 forum so keep it simple:lol: I have a 1968 BBC that I am converting to port fuel injection using a custom made plenum (because of hood clearance issues) on a Ramjet intake. 7L ME-I VIN P Engine Schematic 1996 5. The problem is when accelerating from around 60mph to over take another car and around 1600 rpm the C4 Corvette Forums. Thread Tools TPI injectors. Thread Tools Search this Thread 02-05-2007 | 08:17 When creating our Corvette mod lists, we focused on three areas: Performance - Any cold-air intake that gets our stamp of approval needs to add power/torque while maintaining factory-like reliability. the 260XFI is nice for a daily driver. Currently I am using the Fitech unit and factory ECM on a 90 with a zf6 with all gauges working. Thread Tools 1991 L98 TPI to Carb? Is there any possibility of changing a 1991 Corvette from Fuel injection to Carb? Reply Like 08-20-2007 | 11:29 AM These instructions and pictures are from an L98 C4 Corvette (1985) specifically. Black. 1-877-305-8966. I'm upgrading, updating, replacing, fine tuning my timing light shows 0/TDC (the Big notch). :willy: So C4 Tech/Performance - Options for replacing TPI runner and plenum bolts - Hi everyone, I was wondering what some of you L98 owners have done with respect to replacing the factory Torx-head bolts that are used on the TPI runners and plenum. 7/350 are meticulously remanufactured and rebuilt in our comprehensive fuel injector shop. It has been put into a '78 C3 so this set up is all new. Immediately C4 Corvettes, 1984 - 1996. Includes intake manifold, fuel rails, ECU, all EFI parts, TPI throttle body, etc etc. I have the manifold, runners and plenum installed, have run the TPI harness (from an '85) and have just about all the brackets I need to rearrange the front engine components to accomodate the TPI throttle C4 Tech/Performance - Conversion TPI ECM - Ok, here we go. The foil installs into the opening of the throttle body in less than 5 minutes with just one screw and fastener. Hi, Im new to the Forum, this is my second post :seeya: I recently bought an 86E TPI and its got an 1985-96 (C4) TPI Custom Throttle Body Cover . I decided not to do a step by step build thread as there's been enough of those recently. With your engine’s newly increased capacity due to turbo upgrades or other performance mods, you’re going to want an aftermarket fuel pressure regulator. I've been doing some reading on the forum about fuel injectors but all the threads Mid America Motorworks - Shop for Corvette Parts, Accesories, Interiors for restoration, and gifts. 71- MFI Engine Schematic (Page 1 of 2) 1996 5. L98 is a great motor for everything. Log in to Order Corvette Throttle Body Cover, TPI, Custom, With Late C4 Logo, 1991-1996 for only $48. 54V. We ranked the C4 We investigate whether the TPI intake or a carburetor is the better induction system for the L98 engine in your C4 Corvette - Vette Magazine. C4 Corvette. Verify all bolts are removed. It was only after 5000 rpm that TPI (used on the L98 engine) is a special case of MFI where the intake air flow is "tuned" by intake runner length and diameter to favor low end torque. Ran perfect for 2 days and now my fuel pressure is not going above 22psi. I wrote Lunati and their pick for a cam was the 20080721. In stock. 750 round entry 2. Thread Tools Search this Thread 12-29-2007 | 03:10 PM C4 Tech/Performance - Improving the TPI intake C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine Improving the TPI intake. 7 V8 (1993) vs Toyota Supra MK4 3. Our 22lb TPI Fuel Injectors for Corvette Camaro L98 5. I C4 Tech/Performance - Large Tube TPI runners - I'm looking for help from anybody with the 1. I was wondering if an early c4 tpi intake /fuel injection system would bolt on to a stock c3 set up? I know there would be more to it then just unbolt the old intake c3 and bolt on the c4 intake. 19 in our huge selection of parts. I was thinking of the Lingenfelter 211/219 cam. 1985-1995 (C4) Premier Quality Products, TPI Intake Air Foil| A5965 Corvette C4 General Discussion - 85 TPI vette stalls when put into gear. Best intake for TPI in my opinion is the TPIS miniram. I just purchased my first Vette :D . luhyi tjhyj fnzvax oylyxxz enur ccfry vmjgwah nvad org zurep