ATI Performance Products 917065 Super Damper Harmonic Balancer Big Block Chevy 7.074" Steel Internal Balance

The ATI Super Damper 917065 is a patented harmonic balancer designed exclusively for high-performance engines, providing superior protection against destructive torsional crankshaft vibrations. This precision-engineered damper features a steel construction with black zinc chromate finish and elastomer design, specifically designed for Big Block Chevy 396 and 402 applications with internal balance configurations.

Key Features:

• SFI 18.1 certified with 7.074-inch outside diameter
• Steel outer shell containing a steel inertia weight
• 3-ring design with computer-machined grooves to retain proper durometer O-rings dyno tested for each application
• Laser-engraved 360-degree timing marks for precise tuning
• Three crankshaft pulley bolt holes with single keyway
• Tunable, rebuildable, and efficient at all RPM ranges
• OEM front configuration for standard Big Block Chevy installations

This Super Damper eliminates harmful torsional vibrations that can damage crankshafts and bearings, making it ideal for both racing and high-performance street applications. Used as OEM equipment on various crate engines, the ATI 917065 delivers proven performance and reliability. Sold individually; mounting hardware not included.