There are ring and pinion set made for the torque tube rear ends with a big variety of ratio's. Just use your computer search engine to look up those vendors. I have two 216's. One a splasher, the other converted to full pressure. I use a 3:55 in the '47 splasher and a 3:07 with a T-5 in the other. I have a Tach in each and both are at about 2900 at 65 MPH. My gear sets are from Getz Gears. I have a buddy here locally with a '41 coupe with a 216 with dual carbs, hi-lift rocker arms (1.6) and headers. He turns 3,600 RPMS all day long and it is holding together fine.
Normbc9
