Hello, I swapped an 05 burb drivetrain into my project truck and it has the 4l80E. I updated the gearing and tire size and auto sized tables but speedo is way off (50% of actual speed) and shifting isn't happening under wot in certain conditions.
I'm trying to find the formula to calculate trans rev/mile and the Pulse per mile, if anyone has them handy it would be greatly appreciated.
Trans is the 4L80E, should be a 40 spline shaft, 315/35/20's and 3.42 gears, mostly looking for the formular so I can sanity check some tables.