305 tbi to tpi swap
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Joined: Oct 2009
Posts: 64
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From: CONNECTICUT
Car: 1992 CAMARO RS 25TH ANNIVERSARY
Engine: 3.1 V6
Transmission: AUTOMAGIC
Axle/Gears: STOCK
305 tbi to tpi swap
I have a 91 rs with a 305 tbi and want to swap to a tpi system. Can I use the same harness? i heard you can repinn them to a new ecm. If so what ecm do i need? i got a tpi engine from a 87 camaro. I also have a 92 v6 parts car. I dont know if that helps me at all. thanks!
Joined: Nov 2008
Posts: 2,090
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From: Milwaukee
Car: 92 Firebird, 77 Trans Am SE, 86 Z28
Engine: 5.7 HSR, T/A 6.6, empty
Transmission: T-5, TH350, T-5
Axle/Gears: 3.08 posi, 3.23 posi, 3.23
Re: 305 tbi to tpi swap
this sticky is at the top of the tpi board. Keep an eye out you'll find every answer you need on the boards.https://www.thirdgen.org/forums/tpi/...d-density.html
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Joined: Oct 2011
Posts: 9
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From: canton ohio
Car: 86 iroc z 91 rs 87 iroc
Engine: 305 tpi
Transmission: auto
Axle/Gears: 3.23 posi disk brake
Re: 305 tbi to tpi swap
i did the same swap and used the v6 harness just had to change iac plug and tps plug it as real easy
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Joined: Jul 2011
Posts: 33
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From: PA
Car: 91 RS
Engine: 350
Transmission: T5
Axle/Gears: Posi 3.73
Re: 305 tbi to tpi swap
I did the same swap and you can repin the 91 tbi harness to run tpi very easy just changing the iac, tps,and splicing in the fuel injector connects like said,the only thing is it will become MAP but, I wanted to run MAF because, in opinion it is better and more forgiving to modifications. So it took longer for me but, it isn't that difficult at all.
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