TH350 gearing
I have a GTO with 3.91 rear gears and I'm changing out the 4L65E that has a 1st gear of 3.06 and I'm afraid I will not have enough gear if I leave the 2.52 in the TH350.
Has anyone slowed down at the track after they swapped in a TH350 or 400 because of the gearing?

