BB Chevy 454/502 Race Damper

Fitment: Chevy V8 1970-1990 Engine size: 7.4L/454 Chevy V8 1991-1995 Engine size: 7.4L/454 Chevy V8 1996-2000 Engine size: 7.4L/454   Engine Family: Chevy big block Mark IV Engine Balance: Internal/External Meets SFI #18.1 Degree Markings: Yes Degree Marking Range: 60 BTDC to 0 TDC Crankshaft Pulley Bolt Hole Quantity: Three Keyway Quantity: One  Material: 1045 Steel Note: Includes bolt-in counterweight that can be removed for internal/neutral balance engine applications. This damper is 4.8 pounds lighter than #80005. It's also slightly smaller in diameter (7.6" compared to 8") for further weight reduction.