GMC CK Pickup 1971-1973, Super Damper™ Front Standard Harmonic Damper Steel Shell Assembly by ATI Performance®.
Fitment notes: Fits Models with Crankshaft Pulley Bolt Hole Quantity: 3.
|Engine Balance: Internal|
|Include: With 1-piece Hub, Inner Shell, without Counter Bore|
|Outside Diameter: 6.325"|
|Harmonic Balancer Finish: Black Zinc Chromate|
- Eliminates torsional crankshaft vibrations
- Exceeds SFI 18.1 specs
- Black zinc chromate finished
- OEM equipment on ZZ572 GM Crate Engines
- Tunable, rebuildable, and extremely efficient at ALL RPM
- Laser engraved 360° timing marks
Inner 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).
ATI Performance Products is a family owned and operated company with over 50 years of experience in manufacturing top-grade race products, including competition transmissions, flexplates, adapter kits and internal transmission components. Located in Maryland, ATI Performance® produces a variety of true track-tested and proven products manufactured under the strictest quality control in one of the most advanced manufacturing facilities in the industry. ATI proudly holds over a dozen of U.S. Government patents.