TPI to Carb or stay TPI
Thread Starter
Junior Member
Joined: May 2001
Posts: 6
Likes: 0
From: Jacksonville,NC,USA
TPI to Carb or stay TPI
im getting a 88 L98 for my 87 Z28 with a LG4 the L98 has no plenum or runners just a intake which would be cheaper and work better and what would i have to do for the carb switch up.
Joined: Mar 2000
Posts: 43,187
Likes: 45
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
You need a lot more than just plenum and runners added to an intake to switch from carb to TPI: injectors, fuel rails, fuel lines, in-tank or aftermarket electric pump and associated wires/relays/switches, harness, sensors, ECM, air intake, MAF, TB, throttle & cruise & TV cables, etc., etc., etc.
The LG4 equipment from an '87 should all bolt right onto an '88 L98. What could be cheaper than using what you already have? Okay, you'll need intake manifold gaskets. But, it will work fine as soon as you get it running, vs. all the hassles you'll go through getting a TPI conversion running. Better exhaust (which even the LG4 could use) would be the only thing to add - and you'd want to do that to the TPI anyway.
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82 Berlinetta, orig V-6 car, now w/86 LG4/TH700R4. 2.93 limited slip. Cat-back from '91 GTA, Accel HEI SuperCoil. AMSOIL syn lubes bumper-to-bumper. Daily driver, work-in-progress (LG4 w/'87 LB9 block, ZZ3 cam and intake, World 305 heads, Hooker headers & y-pipe, 3" Catco cat & 3" cat-back).
57 Bel Air, my 1st car. 0.030 over 396, 9.7 CR forged TRWs, Weiand Action+, Edelbrock 1901 Q-Jet, GK 270 cam, Magnum rockers, Jacobs Omnipack, 1-3/4" Hedders & 3" Warlock header mufflers, TH400 w/TCI Sat Night Special conv & Trans-Scat shift kit, 3.08 8.2" 10-bolt w/Powertrax, AMSOIL syn lubes bumper-to-bumper. Best 15.1/94.6 @ 5800' Bandimere.
The LG4 equipment from an '87 should all bolt right onto an '88 L98. What could be cheaper than using what you already have? Okay, you'll need intake manifold gaskets. But, it will work fine as soon as you get it running, vs. all the hassles you'll go through getting a TPI conversion running. Better exhaust (which even the LG4 could use) would be the only thing to add - and you'd want to do that to the TPI anyway.
------------------
82 Berlinetta, orig V-6 car, now w/86 LG4/TH700R4. 2.93 limited slip. Cat-back from '91 GTA, Accel HEI SuperCoil. AMSOIL syn lubes bumper-to-bumper. Daily driver, work-in-progress (LG4 w/'87 LB9 block, ZZ3 cam and intake, World 305 heads, Hooker headers & y-pipe, 3" Catco cat & 3" cat-back).
57 Bel Air, my 1st car. 0.030 over 396, 9.7 CR forged TRWs, Weiand Action+, Edelbrock 1901 Q-Jet, GK 270 cam, Magnum rockers, Jacobs Omnipack, 1-3/4" Hedders & 3" Warlock header mufflers, TH400 w/TCI Sat Night Special conv & Trans-Scat shift kit, 3.08 8.2" 10-bolt w/Powertrax, AMSOIL syn lubes bumper-to-bumper. Best 15.1/94.6 @ 5800' Bandimere.
Thread Starter
Junior Member
Joined: May 2001
Posts: 6
Likes: 0
From: Jacksonville,NC,USA
The person im getting the L98 from said the intake is from the original TPI set up all he took off was the runers, plenum and a few other things that he is gonna give me a list to, I have an edelbrock performer RPM intake from my 87 monte ss that I put on the LG4 could I actually just bolt it on and throw on my double pumper and it would work or what? if I can im gonna do that cause fuel injection and electronics is so damn confusing.
________________________
87 black Z28
LG4 edelbrock perf. RPM
holley 650 dbl. pumper
accel dist. and wires
________________________
87 black Z28
LG4 edelbrock perf. RPM
holley 650 dbl. pumper
accel dist. and wires
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