I had a TH400 in my ex-84 Vandura. It cruised great at highway speeds, but I suspect it had 3.08 gears. My 93 has the 4L60E (basically a 700R4 I think) and I jumped from 3.42 gears to 3.73 gears. Need that 4th gear.
Personally I'd go with the 700R4 and have it built according to the HP and rear gear you plan to go with. It's nice having that 4th gear.
Last edited by NateB; June 08th 2021 3:10 pm.