ATI Performance Products 917781 6.325" Harmonic Damper for Small Block Chevrolet

Brand	ATI Performance Products
Model	917781

SFI approved

Super Damper Harmonic Damper (Internal Balance Damper Assembly) Part Number: ATI 917781 The patented ATI Super Damper is the only crankshaft damper designed exclusively for high performance Chevy engines.Eliminates torsional crankshaft vibrationsExceeds SFI 18.1 specsBlack zinc chromate finishedOEM equipment on ZZ572 GM Crate EnginesTunable, rebuildable, and extremely efficient at ALL RPMLaser engraved 360° timing marksInner and outer shells are available in aluminum or steel, and contain a steel inertia weight. This inertia weight has six (2-ring design) or eight (3-ring design) computer machined grooves to retain the proper durometer O-rings (dyno tested for each application).Specifics: Chevy / Pontiac Small Block V8 1.245" CrankshaftFront for HUB with Inner ShellSteel Shell6.325" OD3 RingTotal Weight 6.00lbsInertia Weight 2.40lbsStandard Front No Counter Bore