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GM Standard SFA Trucks & SUV's All discussion of full sized Solid Front Axle Trucks, SUV's to include Suburban

 
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post #1 of (permalink) Old 10-03-2002, 02:50 PM Thread Starter
 
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All you tranny Guru\'s:

Okay, On friday night for lack of anything better to do while we drank with Bubba (it's a canadian thing), me and my buddy ripped into this little auxillary tranny that he has had lying around his shop for some time. He's an old trucker and GM guy and he's never seen anything like it so I'm hoping someone here knows something about it. Okay:

The unit is about 2" wider than a NP205 minus the front output portion, so think a cast case 2" wider than a 205, but about 6" shorter due to the lack of a front output shaft.

Not synchronized, 3 gears on the mainshaft, 3 on the countershaft.

1-ton yokes on either end, coarse spline yokes (~10spline)

Two shift rods just like the NP205; no linkage came with the unit.

Four ~1/2" threaded holes on the top to mount it to a crossmember.

One underdrive gear (approx 20% under)
One overdrive gear (approx 30% over!!!!!!!!!!!!!!)
One straight thru
and a neutral position

"HUBBARD" is stamped on one of the end cap of one of the shift rail.

1 bolt on the countershaft retaining plate

Stapmed "Stewart Warren 78744 - Made in USA"

Stamped "70810 S.W."

I counted the gear teeth so I'll get some exact ratios in a couple days when I get around to figuring them out.

This tranny was bought state side and brought back up across the border.

Anyone got any ideas as to what this thing came outta?? We're thinking about 1950's gear, but haveing an under and a BIG over sure would give you many many options with diff gears and whatnot.

Any info much appreciated, thanks.
beaterchevy is offline  
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