ATI Super Damper SFI 18.1 Harmonic Balancer - 6.325 in OD - Black Oxide - Internal Balance - Small Block Ford 917511 H759C02XS Provides the Necessary Clearance Through

Provides the Necessary Clearance Through the Upper Transmission Crossmember for the Drive Shaft Coupler and Speed Sensor Ring when Installing the NAG1 or 8HP70 Transmission

1967-1967 Chevrolet K20 Suburban

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

The durable bronze or Babbit-style bushings have a long service life to keep your transmission running smoothly for longer

1979-1981 GMC G1500

ATI Super Damper SFI 18.1 Harmonic Balancer - 6.325 in OD - Black Oxide - Internal Balance - Small Block Ford 917511 H759C02XS Provides the Necessary Clearance ThroughThe 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