I don't know about the newer trucks, but here are the ratios for the '46 2-ton. According to my reprinted manual the standard ratio was 6.17 with an option for 5.43. The two-speed version was 8.22/5.64 with the option of 8.22/6.17.

Cautions/warnings are posted regularly about increasing your top speed while maintaining the original kingpin front ends and brakes.

I'm mulling the same question on mine. Good Luck.


When I find out what I'm doing, I'll let you know if I'm in too deep.