It has 3 positions for the shift rods, plus neutral.
I shifted each possible position and rotated the input shaft and walla under, direct and over.
I checked it out before making the statement about it being an 3 speed under, direct and over auxiliary trans.
Plus I verified that it does bolt directly to the rear of an SM420.
It is for an open drive-line setup and seeing as how it does not have the ability for a drive-line E-brake.
My thinking is that it may be for 3/4T or 1T open drive line, with cable E-brakes at the rear wheels.
Dance like no one is watching,
Sing like no one is listening,
Love like you've never been hurt.
1948 GMC FC101 1/2t Pickup w/270 and SM420
1948 GMC FC253 1t Factory 80"x9' Flatbed Dually
1948 Chevy COE 2 Ton 8'x15' Flatbed
1950 GMC 354-24 2 Ton 8'X12' Flatbed w/Dump Hoist
1953 GMC 454-30 3 Ton 8'x14' Flatbed w/Dump Hoist
1953 GMC 454-30 3 Ton Cab and Chassis
1942 Clarkator 6 MILL-44 Heavy Aircraft Tug
1942 Ford (9N) Moto Tug with 1/2 yard Loader
1947 Oliver OC3 HG-42 Tract-Crawler Bull Dozier w/6' Blade
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