Description
ATI Performance Products 918620 For LS7 427
Engine Balance: InternalSafety Rating: SFI 18.1Degree Markings: YesDegree Marking Range: 360Outside Diameter (in): 7.530 in.Harmonic Balancer Material: AluminumHarmonic Balancer Construction: ElastomerHarmonic Balancer Finish: Black anodizedMounting Hardware Included: No
Notes: Damper weighs 6.85 lbs. Features 8-rib pulley with 4-rib a/c pulley.
Super Damper® Harmonic Dampers 
The patented ATI Super Damper is the only crankshaft damper designed exclusively for high performance Chevy engines.
- Eliminates torsional crankshaft vibrations
- Exceeds SFI 18.1 specs
- Black zinc chromate finished
- Tunable, rebuildable, and extremely efficient at ALL RPM
- Laser engraved 360° timing marks
The ATI Serpentine Super Damper contains grooves for serpentine belts machined into the outer damper shell. The dampers come standard with 6 outer grooves for standard OEM drive systems. 8 & 10 grooves are available for supercharger or turbo applications. Serpentine dampers are available in a variety of diameters. Crank hubs may be fitted with a 6 groove serpentine pulley to drive external oil pumps or vehicle accessories.
The Serpentine Series dampers fit all ATI GM-front crank hubs and can be adapted to many engine combinations providing maximum flexibility. These dampers are available in steel or lightweight hard-coated aluminum and come with laser engraved 360° timing marks. Exceeds SFI 18.1 spec
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