ATI Super Damper SFI 18.1 Harmonic Balancer - 6.325 in OD - Black Oxide - Internal Balance - Small Block Ford 917511 H759C02XS 1979-1981 GMC G1500

1979-1981 GMC G1500

75" LengthUsing his own 57 Chevy as a rolling test bed

and clutch and shift linkage may be required

Only includes the tubes highlighted red

ATI Super Damper SFI 18.1 Harmonic Balancer - 6.325 in OD - Black Oxide - Internal Balance - Small Block Ford 917511 H759C02XS 1979-1981 GMC G1500The 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