TPI conversion help/update
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Junior Member
Joined: Apr 2016
Posts: 6
Likes: 0
From: Rhode Island
Car: 1990 bandit II formula
Engine: 355/9.25:1/6psi
Transmission: Tko
Axle/Gears: 9 bolt with 3.70s
TPI conversion help/update
I've done a search and can't seem to come up with the info I need.
I've gone a different route with the TPI conversion in my 90 formula (originally a TBI car)....at first I had a MAF setup and I've ditched it to make life easy at the bulkhead connector.
I just had a 91 TPI speed density Camaro harness dropped in my lap. Anyone know if I'll have any trouble at the c100 connector? I've found pinouts for different years but nothing Camaro vs firebird specific. I know I'll have to make some splices up front with my pop up headlights but as long as everything's in place at the c100 bulkhead connector I'll be good to go.
Thanks in advance for any help.
Edit* I'm also curious if gauge cluster wiring is plug and play, i.e. Will I have any issues with the Camaro harness?
I've gone a different route with the TPI conversion in my 90 formula (originally a TBI car)....at first I had a MAF setup and I've ditched it to make life easy at the bulkhead connector.
I just had a 91 TPI speed density Camaro harness dropped in my lap. Anyone know if I'll have any trouble at the c100 connector? I've found pinouts for different years but nothing Camaro vs firebird specific. I know I'll have to make some splices up front with my pop up headlights but as long as everything's in place at the c100 bulkhead connector I'll be good to go.
Thanks in advance for any help.
Edit* I'm also curious if gauge cluster wiring is plug and play, i.e. Will I have any issues with the Camaro harness?
Last edited by Rkn1990; Jun 24, 2016 at 12:50 PM. Reason: Additions
Joined: Nov 2008
Posts: 2,097
Likes: 177
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: TPI conversion help/update
If memory serves, the headlight etc harness at the bulkhead will separate from the engine side of the bulkhead fairly easily. That's really the only difference between the Pontiac and Chevy. I did the swap years ago and the only thing I had to change in the bulk head was for the reverse light wiring (automatic harness in a manual car). Other than that it was remove tbi harness, install tpi harness.
Thread Starter
Junior Member
Joined: Apr 2016
Posts: 6
Likes: 0
From: Rhode Island
Car: 1990 bandit II formula
Engine: 355/9.25:1/6psi
Transmission: Tko
Axle/Gears: 9 bolt with 3.70s
Re: TPI conversion help/update
Thanks! Yeah I know the bulkhead connectors will plug right in, just trying to make sure the c100 pinout doesn't change from Camaro to firebird as long as my year is correct. It's currently going back together so I'll be finding out either way real soon haha
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