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View Full Version : Swapping in an L98 intake into a 1990 TBI truck?


JJBrown
01-31-2005, 08:18 PM
Does anyone know what I would need to complete this swap? would it be worth the work?

mrr23
02-14-2005, 04:11 AM
intake, PCM, engine wiring harness, TPI fuel pump or an inline one that puts 50 psi out. all the sensors, etc. over the TBI, it'll be well worth it. boost your torque way up. also check out www.thirdgen.org to get more ideas on a TBI to TPI swap.

jmd
02-15-2005, 10:31 PM
Change the pump to one for port injection as the pressure is higher than that for throttle body injection.

The ECM needs swapped to one for port injection; the 90-92 MAP system (harness included) would be best.

Some sensors are the same.

Intake with injectors, fuel rail, modification of the fuel lines to meet up to the fuel rail.

Aftermarket harnesses tend to skimp on their fusing system and some of the "little stuff" (like wires to the AC compressor etc.) so I always recommend using a good used harness. The wiring at the dash plugs for a TBI Camaro is basically identical to a TPI Camaro so that shouldn't be tough.

Worth the work? Depends on how you view working on cars.

JJBrown
02-16-2005, 01:50 PM
Thanx guys.

Frosty
03-16-2005, 12:00 AM
Cant remember who but someone makes a piggy back harness and computer to go with your stock ones. Both TBI and TPI are batch fire systems so its not that big of a swap.