I'm trapping at 146-147 now, and with a 28" tire at my redline. I'm wanting to turn the car up a little more and see a faster trap speed, but I'm out of rpm with a 3.55. Anyone go from a 3.55 to a 3.27? What kind of differences did you notice?
Your converter sounds too loose. What RPM are you seeing at the stripe?
Run this calculator
Wallace Racing - Converter Slip Calculator