5.3L LS4 swap into a 95 Oldsmobile Cutlass Supreme SL

[JulienStocola]

so

this is my first post here on this forum and i don't quite know what to get out of it, as you saw I'm attempting to get all pieces together to get a 5.3L LS4 swapped into my 95 Oldsmobile Cutlass Supreme SL. Being a obd 1 car i don't know if its only the ecm/ecu that runs the tranny or if there's a bcm ( body control module) that goes with it, that being said this car was given to me as a gift from my grandfather who recently passed, so if you guys are tryna convince me to start with something else forget it, ive seen the motor go into the car already and the guy who posted it here was even brave enough to get a 4t80 inside along with it.

my main question is what ecu and standalone kit would be best used for this setup as i only see all other ecu's being compatible with the other LS engines instead of this one

 

 

[Black92GS]

Welcome! That sounds like a somewhat ambitious swap. A 95 would have had the 4t60e, which has the shifts controlled electronically. Outside of physically fitting in the engine bay, I can’t see any of the existing electronics functioning with an LS4. 
 

On the flip side…it’s an LS4. I know there are aftermarket companies that make ECMs that can run LS series engines, as well as standalone TCMs specifically for the 4T80e, so finding the parts to run the powertrain should be possible, and likely relatively easy as well. 
 

Best of luck! While ambitious….it would be awesome to see something like this completed!