If I use an 89' T5 ECM when doing a 700r4 to T5 swap in a 92, will it be compatible with the rest of the car? Both are TBI cars. Thanks.

 

are they both tbi ecm's? they should both be 1228746 if so yes they will interchange.

 

Yes, the current one is a 1992 TBI 700r4 ECM and the one I'm looking at getting is a 1989 T5 TBI ECM

 

your old ecm will be fine the only differance is in the pro programing. yours now will send a lockup signal a 42 mph to lock the torque converter clutch. it will work with a t5 if you ant to make it a little better just get a prom for L03 t5 tbi

 

Ok, I want to swap in the T5, but know that it's better to have the T5 Prom too. I know the TBI cars are practically the same from 89-92, correct? Is the Prom inside the ECM?

 

the ecm service number 1228746 is the same the prom is the only differance. there is 3 to 4 letters on top of the prom called a broadcast code that is the programing code. The prom is inside of the ecm just pull the access cover on top of the ecm.

 

GREAT! Thanks again. Got the answer I needed. I bid you good day, sir.