I have an 1989 Pontiac Firebird, i bought a '95 LT1 complete motor, harness and computer to swap into it. I researched the service no. on the LT1 computer, it came up (Corvette, Camaro, Firebird). I also have two other computers and harnesses, both are from '89 Firebirds. One from an '89 6cyl and one from an '89 8cyl 305. What do i have to do to make this motor work in my Firebird? Would i have to run two separate computers, one for the LT1 and one for rest of the car? Can i tune all of this into one computer and splice the harnesses together? I have never done an engine swap with TPI nor do i have any experience with computer tuning. Any help/advice is greatly appreciated!

 

Check out the lt1/ls1 section

Do a search for lt1 harness start to finish to see what you're up against. There are less involved routes but i don't condone them

The old ECM will be removed. The gauges are compatible with the lt1

What trans will you be running? Best two options are a 4l60e or t56. T5 will bolt up and work if you don't abuse it, but power hungry swappers should avoid it

95 lt1s came in 3 chassis, all are roughly the same in performance and fit the 3rd gen engine bay

Corvettes had alum heads and a drivers side accuracy bracket

Fbodys alum heads, pass side accys

B-body's (most common and cheapest) had iron heads and pass accys

 

Im planning on running a 700R4 transmission. The motor has aluminum heads. I'm assuming you mean accessory not "acuracy"brackets? Which mine are on the pass side. Im going to research that LT1 harness article now.

 

The 95 PCM cannot control tcc on a 700r4 and adapter kit is about as much as a 4l60e

I'd suggest a trans change

 

Hows the swap going so far? I think I figured out most all of the wiring for my 93 lt1 swap.. So let me know if you need help and ill see what I can do!