Bob's Resource Website (2007) Studebaker T-85 Transmission rear seal
NOTE: The Trucks ARE the same as '56-'57 GH & Pres. Classic Short Tail O.D. that use: 1540818. These are No Longer Available!
But '58 GH T-85 Long Tail, is 1545164
And '61-'64 T-10 4 Speed is 1555257
R.Gahlbeck/02/10
This is a Borg Warner model T-85C-1A for a 1956 Studebaker Golden Hawk 56J. This transmission has the much stronger Borg Warner R-11 overdrive that has four gears in the planatary instead of three.
The T-85 was used on 56 thru 58 Golden Hawks, Hawks,Commander and Presidents that had ordered the heavy duty transmission. It was Standard on the Golden Hawks, Police cars and Taxis.
This transmission can be used with the 289 Studebaker V8 by changing the input shaft to pn 1540811 and the front Bearing retainer to pn. 1540810. Everything else is the same. You must use Belhousing 1539373 from 56 to 58 or 63 to 64 V8 cars. This transmission was much stronger that the T-86 found in most 3 speed Manual cars. The shipping Weight with crate is about 140 pounds.
The history of the T-10 transmission (GM ST-10) begins with the Borg Warner T-85 3-speed which was the basis for the Borg Warner T-10 4-speed first used by GM in 1957. It had a 9 bolt side cover and was commonly refered to as a "Sideloader".
Ratios:
First: 2.97:1 or 2.49:1; Second: 1.59:1; Third: 1:1; plus Overdrive
Reverse 3.15:1
R10/11 Overdrive Manual |
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Specifications
1.561" id, 2.837" od, .592" wide.
Seals with similar specs (leyrret/SDC Forum)
SKF 15234 shaft size-1.5, bore size 2.835, O.D. 2.839, width .313
SKF 15324 shaft-size 1.535, Bore size 2.835, O.D. 2.844, Width .315
(I checked shaft and bore size on t-85. Bore is about 2.840-42, shaft 1.560-63.
The second (seal) number should be a good fit. The .028 difference in shaft diameter
shouldn,t make any difference.
It is the same seal used in truck (Stude?)T85s up thru 1964. Studebaker part# is 1540818.
The Stude # cross references to Chicago Rawhide R11 110, also cross references to Garlock 63X8078, but appear are NLA.