Hello all,

Eventually I would like to diesel swap my '66 C60H (doesn't have the original motor in it anyway), which is going to require different gearing. Right now I have the very tall 7.17 ratio gears (2-speed, other ratio is 9.something) according to my tag in the cab.

This is an air brake, cast spoke truck, with what I believe is the 17,000# or 17,800# Eaton axle (how to identify?) Am I better off getting a different axle? Unfortunately I just spent some good money putting new brake parts on this one, but if a new axle is my best option, so be it. I'd love to keep the 2-speed set up for originality's sake if I can.

Thanks!