The Stovebolt Site Forums The Shop Area Driveline 1955 chevy 3100 ring gear and pinion

hello all I have a 1954-3100 chevy hydramatic 235 ci (WITH A 1955 CHEVY REAR END) open driveshaft currenty I have 3;38 ring and pinion would like a little more SPEED!!!!! Is there any other ring gear and pinion oppitions that would fit into my stock 3 rd member 1955 chevy truck are the car and truck 3rd members interchangable ????? any ideals THANK YOU IN ADVANCE !!!!!!!!!!!!!!!!!!!! Glenn

3.38 gears with a 28" tall tire would spin the engine at 2435 RPM at 60 MPH and run 84 MPH at 3400 RPM if your 235 could push the truck that fast.
3.38 gears with a 30" tall tire would spin the engine at 2272 RPM at 60 MPH and run 90 MPH at 3400 RPM if your 235 could push the truck that fast.

I wouldn't want to be in a stock steering, suspension and brake equipped AD truck at that speed.