Dave, checked my manual. Found a model H-110 rear in a 1-1/2 ton and H-130 in 2-ton single speeds. These are GM corporate axles. They had Model 1350 or 16600 Eaton brand for 2-spd axles. Were vacumm shift with one hose to it or Electric with wires and switch at shifter. Info from a 47-54 GMC manual reprint. Usually these are said to be for all years, yet usually are for the 54 in this case, I'm thinking. 54 stuff should be mostly the same as 55 and up chassis.


G.L. Grumpy's
Old Iron Ranch
Huntington, IN 46750


MM R tractor, Speedex
and Power King tractors