GForce Part  No.  # 153105SSI

 Vehicle Application…………….: GM , Chevrolet

Vehicle Years……………………: 1955 – 1985 SBC   

Vehicle Years……………………: 1963 – 1972 BBC

Ring Gear………………………..: 153 Tooth 

Rear Main Seal Style………….:   2 Piece

Flywheel Material………………: Forged Billet Steel

Flywheel Balance………………: Internal Balanced , also called, Neutral Balanced

Flywheel Weight………………..: 25 lbs. 

Clutch Disc Size………………..: 10.5” inch.

Clutch Pressure Plate Style….: Diaphragm  and  Borg & Beck  Styles

SFI Safety Rated……………….:  Yes , SFI Certified 1.1