4.0 swap quick question

[stevealvey24]

So I'm doing the swap later this month. Will take pics. But got a quick question. Is the 4r55e controlled by a rec iv computer in its earlier state? If so what do yall think about keeping the rec iv stuff but going to a 4r55e instead of the a4old. Using the wiring harness from like a 1994 in my truck? Any thoughts?

 

[adsm08]

The 4R transmissions started in 95. You'd need the proper year harness and computer to run the trans properly because of the different level of electronic control.

It really is a glorified A4LD, but the valve bodies are different.