ATI Performance 917062K Big Block Chevy 8.074 in. Harmonic Damper -SFI

Standard Harmonic Balancer - Internal Balance SFI 18.1 For Chevy/GMC Big BlockBrandname: ATI Performance Products Part Number: 917062K Description: The patented ATI Super Damper standard harmonic balancers are the only crankshaft dampers designed exclusively for high performance engines. Inner and outer shells are available in aluminum or steel and contain a steel inertia weight. The inertia weights have six (2-ring design) or eight (3-ring design) computer-machined grooves to retain the proper durometer O-rings (dyno tested for each application). Whether you race or just drive on the street ATI harmonic balancers are the perfect choice. Features: Eliminates torsional crankshaft vibrations Exceeds SFI 18.1 specs Black zinc chromate finished ORG.MFR equipment on a variety of crate engines Tunable rebuildable and extremely efficient at all rpm Laser-engraved 360° timing marks Supercharger and power steering drive pulleys available for some applications