My brother put a Tremec 6 spd out of a Camaro in his 1966 C10 with a SBC 350 in it. It has 2 OD's. First is like .83 and the 2nd is .6X something. He has hauled some heavy loads with it no problem and plenty of times dumped the clutch on high RPM's. Solid trans. I think he got it from JEGS.
