Quote Originally Posted by IdahoRob View Post
Jerry yours is trying to lock in 2nd gear, but can't and blows threw the converter until it shifts into 3rd. This is what it looks like to me in the logs. I'll work you up a tcm tune to see about locking the converter on the 2/3 shift.
I'm not sure how to tell, but I don't think my truck with this converter has ever locked until 4th gear when doing a 1/4 mile run, even before twins. I haven't been able to tell, but the rpms after the shifts on 2-3 never drop below 3400 rpms or so. Only going into 4th does it drop down to 2500 rpms as well as into fifth. Then again I haven't figured out the gear ratios, but it sure doesn't look like mine has ever locked before 4th gear at wot during a 1/4 mile run.

Jody