JooneJune

Welp, the 94 camaro is done. I plan to put my 94 motor and trans in a 1995 Firebird formula that has a shot motor.

Few quick questions maybe you can save me time,

1. My trans was built by performabuilt for my 94, if I install it in the 95 is the 95 A4 harness plug n play with the 94 connector on the trans? Performabuilt lists it as 94-95 stg 2 trans.

2. Orig, this motor was in a 95 lt1, when i did the rebuild for the 94 i switched the opti, dowl pin (cam) and timing cover for a nonvented system. Plug n play with the new 95 engine harness? Or do i need an adapter for the connectors from MSD Probillet (opti) to engine harness.

3. I have a tuned 94 PCM, I'm almost sure I need to send it to ION to be reprogrammed to be used in a 95. Or should I just send him my 95 computer to be tuned?

4. Any prep I should do if the rebuilt motor (with assemb lube) hasn't been spun/rotated in about a year? (don't bash me, it's killing me this motor hasn't been started...I'm way worried)

5. Would it be easier to swap over my 94 Motor/Trans/engine harness/PCM and use the 95 body/dash harness/healight harness(engine fusebox) would that work?


Thank you for the look, if you can't help thanks for taking the time to read. For those with input, I greatly appreciate it. I'm so excited to get this bird rollin'.

madhatter

Everything should be the same. I know the 94-95s used the same PCM, but I am not sure if they have the same tune for the trans. I know the harness is the same.

JooneJune

The reason I asked about the trans is I've heard there is one wire I would have to run from PCM to trans to make it work. Maybe they were wrong.

Any input on my 1-5 questions (Rob or Fred) lol.

JooneJune

Bump for a lil help...

JooneJune

bump for some help....

Matt1997Ta

everything is the same. the wire you have to run to the trans is for 96-97 obd2 cars.



The wire goes to the PWM soliniod which if unhooked on obd2(96-97) cars keeps it from shifting into overdrive. This can also be tuned out of the computer.

Matt1997Ta

I would prime the oiling system with a std sbc oil primer. have the valve covers off and prime till all pushrods are oiling. You must do this prior to installing the intake and oil pump drive(black piece that bolts down in the rear of the valley). as long as the motor hasent been exposed to the elements it should be fine.

JooneJune

from what I've herd the PWM is different in the 95 car that controls lockup...

its the brown wire that runs from the trans to the PCM D connector...

Matt1997Ta

one thing you may run into is the VATS being differnt between the cars. This too can be tuned out of the computer. Ive only seen this happen once.

JooneJune

yer my Vats is tuned out.

Matt1997Ta

Ive only had to do the wire on OBD2 cars. 94-95 harnesses do not have this wire.

JooneJune

I still have to look at my harness but i forgot about those silly 95s with a 16pin aldl and a obdi PCM lol.

shoebox

1995 has a PWM solenoid for the TCC that the 94 does not have. There is an extra wire to the transmission on the 95 harness for it.

Using the 94 transmission, you don't need the extra wire, but need to use a tune for a 1994. If you use the 95 engine/trans harness, it will still work and the extra wire in it will not be used.
Personally, I would stick with the harness that is in the car you are putting the engine into (looks to be a 1995). The 94-95 computers are physically the same - just different tunes.

JooneJune

I have two computers one that Ion at Madz28 tuned for my 1994, the other is a 1995 that i would have to send out...

your saying use the 94 Pcm, and 95 harnesses? an I should be good?

JooneJune

Called the shop that built my trans. He puts/keeps the PWM in all of his trannys. Thisway it'll work with all years, if its a fbody that doesn't optimize the PWM Chris still keeps it in the trans it just wouldn't be used. So the trans is plug n' play YAY!