ATI Super Damper SFI 18.1 Harmonic Balancer - 6.325 in OD - Black - Internal Balance - Small Block Chevy 917411 RRP364-BTC a boost only version is

a boost only version is also available for diesel or extreme boost applications

1965-1974 Chevrolet Bel Air CID 502

NOTE: The PN 83653 is designed to replace GM HEI Distributors that use a 4-pin ignition module

steel or super lightweight

1967-1978 Dodge Monaco

ATI Super Damper SFI 18.1 Harmonic Balancer - 6.325 in OD - Black - Internal Balance - Small Block Chevy 917411 RRP364-BTC a boost only version isThe patented ATI Super Damper is the only damper designed exclusively for high performance engines. Eliminates torsional crankshaft vibrations Exceeds SFI 18. 1 specs Laser engraved 360 timing marks Black zinc chromate finished Inner and outer shells are available in aluminum or steel contain the steel inertia weight. The inertia weight has six (2 ring design) or eight (3 ring design) computer machined grooves to retain the proper durometer O rings