I am still having trouble with 3-4 shift and lock up kicking in and out in 4th, but would someone mind looking at my tune and log, it could be a tune issue. I had a pressure gauge on tranny and the pressure goes way up when shift is commanded and stays high for 4 or 5 seconds(but doesn't shift) then pressure goes down, then 2 or 3 seconds after that it slides into 4th. the 2 problems might not be related, any ideas? 1-2.2-3 are very quick. this is not a daily driver, maybe a thousand miles a year. it is about 440 whp. don't expect trans to last 5 years. Just want it to shift quick now.
LT1 383 11.4 comp 26/18 Diamond pistons, AFR 195 Eliminator heads 238/246 605/618 110 cam 36 lb injectors, 390 gears 9", 3600 Circle D, 24x LS1 conversion.