Join Date: Apr 2005
Location: Pensacola, Fl. U.S.A.
Both the main shaft and the lay shafts are the same in the 1966-1994 transmissions. Only bearings and their bearing races are different.
Easy to differentiate the older bearings from the newer (1974-1994) as the earlier have small ball bearings compared to the later roller bearings.
The rear housing (Tower) on the two are different to accept the larger bearings.
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"When you are dead you don`t know it.
Only those around you are distressed.
Same with stupid"