Anyone drag race with higher gears in the rear end?
Like Joe said it's not the converter that's slipping a lot. That's just how they are with 3.55's and 26" tall tires. I'm running 3.55's in my Cuda with a converter that originally stalled 3k behind the old 360 (stalls 3500+ behind the new 408 but my tires are 27.7" tall so at 65 it's only spinning right at 3000. Not a huge diff. from yours but some due to the taller tires.