I did a quick search and didn't find what I was looking for. We have an 02 Z06 that's been converted to an automatic. Built 4L60e with a Circle d Tripple Disc converter. Everything works as it should and the car is in the 10.2? Street Drives great with TCC lockup and releaase when commanded. Just started locking the TCC up in 3rd gear at WOT and picked up a nice MPH gain on the top end. Here is my issue, No matter what I command the lock up to happen at, it waits until 109-110 mph before the converter locks. I would like to try locking around 85-90 mph. Any one have this problem? I can stop it from locking I just cant lock it any lower then 109-110. Not much under Auto TCC, shift lock is disabled, TCC DC is 100%, all apply release speeds in 3rd gear locked at 75mph and release at 73mph, still not locking until 109-110.

Bad383TA