ATI Super Damper Harmonic Damper - SB Chevy 400 - 7.074" Diameter - Steel - External Balance HYPL11M61FIA Tough nylon outer shell and

Tough nylon outer shell and soft padded interior adds protection for your investment

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most versatile "big" carbureted fuel pump

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ATI Super Damper Harmonic Damper - SB Chevy 400 - 7.074" Diameter - Steel - External Balance HYPL11M61FIA Tough nylon outer shell andATI Super Damper has become one of the industry's standards in harmonic vibration control, combining two dampening surfaces in one unit. At 6000 RPM, digital vibration tests proved the ATI Super Damper to be 30% more effective than original equipment style dampers. ATI Super Damper consists of an outer shell, inner shell, crankshaft hub, and eight individual elastomers. Reductions in torsional vibrations provide increased horsepower while improving