Now I know what it is...and my local drive-line shop can and will help with the U-Joints and splines needed. I am going to install this "Watson" 3 Speed Auxiliary Transmission in my 1948 GMC FC-253 1T. In stead of using one of my Clark 5 speeds. The 1TON has a 1956 GMC 248 CID in it.

I took the ends and side cover off today to check out the inside, It was so clean I was going to eat my lunch on it.

I had the drive-line specialty shop check it out with me. So next week we get started with getting the splines..I had the U-joints. Also, will fabricate a rear mount (rubber) for it.

I will take pix tomorrow.

I will have to change seats from the standard bench seat to a pair of single seats, because of the new location for the shift lever being slightly off center, to the left and rear of the SM420 shifter.


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