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Mpfi to carb

Old 10-13-2018, 03:21 PM
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Car: 1987 Firebird
Engine: 2.8L V6
Transmission: 700r4
Mpfi to carb

Iím switching my 2.8 V6 over to a 350 and Iím wondering if I have to do is disconnect the throttle cable from the throttlebody and put it out of the carb for it to workÖ And does that mean that I could essentially remove the entire computer?
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Old 10-13-2018, 06:09 PM
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Car: 1989 Pontiac Firebird
Engine: Carb 305
Transmission: WCT5
Axle/Gears: 3.23Posi
Re: Mpfi to carb

I'm sure someone with more experience will chip in, but I am in the middle of swapping a 305-T5 car to carb, and I'll pass along my notes. I assume your car has either a t5 or a 700r4., the 700r4 should just need attachment for the TV cable, and most aftermarket and GM carbs have one. If you by some odd chance have a 4L60E, you need a throttle position sensor, which is available for most aftermarket carbs. If you have a T5, you are good.

The computer on these cars runs the fuel injection but I am not sure if it is connected to the gauges and radio. . .
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Old 10-14-2018, 02:20 AM
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Car: 86 Imponte Ruiner 450 GT
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Transmission: 700R4 3000 stall.
Axle/Gears: 9 Bolt Torsen 3.70
Re: Mpfi to carb

The V6 and the V8 use the same ECM. With some wiring changes and a V8 MEMCAL it could run a V8 TPI setup.

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Old 10-14-2018, 11:58 AM
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Car: 1967 Camaro, 91 z28
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Re: Mpfi to carb

Originally Posted by GeneralDisorder View Post
The V6 and the V8 use the same ECM. With some wiring changes and a V8 MEMCAL it could run a V8 TPI setup.

I donít think the 1227302 can drive 8 injectors. It might be better to repin and get a 1227165 and maf. Or get a harness and double check C100 compatibility.
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