The B-W heavy duty 3 speed that eventually got modified into the T-10 4 speed was the T-85. There were a lot of them in Pontiacs- - - - -very few in Chevy cars and trucks. Parts are scarce and pricey, and complete transmissions are just about nonexistent.
Jerry


"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!