Erod LT1 and 8HP70 Swap for Jeep YJ

Joshuaball

Hi All,

I've got an engine/trans combo that I'd really like to use in an upcoming '94 YJ build, and I wanted to see if anyone has any guidance around CARB compliance. The Erod LT1 gets me smog compliant out of the box, but I keep reading about complications around using an aftermarket TCU for an 8HP70 sourced out of a Dodge truck. Has anyone done a similar swap for a a California vehicle? I didn't find any posts on the forum about this, so I wanted to start one. Any hurdles or gotchas? Any people or resources that would be helpful as I continue hunting down info?

Thanks all,

-Josh

Joshuaball

OK! I think I have a path forward, but would love someone more knowledgeable to chime in. It looks like the CA smog failures on the transmission side come from reading codes about transmission warnings or errors. I found a writeup (and video linked below) about an 8HP70 swap done to a 2000s era Tacoma in California. He passed smog by getting an ECU from the same year Tacoma with a manual transmission to get around any transmission codes being thrown/stored in the ECU:

https://youtu.be/WNeBQq0JYPA?is=nGrUFEmOffT-PSWr

For my use case, there is an Erod package meant to run a T56 transmission, and the ECU that comes with it is flashed for that configuration. Sounds logical, but it's just a theory right now.