labwork For 621 SBC BBC GM 11" Manual Clutch Appllications Bellhousing 1959-1988 Chevy

Works with GM transmissions with a 4.675" O.D. Bearing Retainer Clears 168 tooth 14" Flywheels with factory 11" Clutch Discs 1/2"-13 tapped hole for z-bar manual clutch linkage, if needed. Fits ALL Small Block & Big Block Chevy engines regardless of factory clutch size