I have a '48 1.5ton with 20" wheels and a 5.4:1 rear axle.
Instead of all the work of a 5-speed, I figure I can get the same end result (60 mph cruise) by installing a taller ratio diff. I have been looking at options and the rear axle in a 55-58 Chev 1.5 ton LWB pickup appears to have the same diff head unit. But on 15" or 16" rims- with a 4.5 ratio.
Can anyone confirm this?
Swapping diff heads is a morning's work. easy. Finding the right one not so easy.
