ATI Performance Products ATI917064 Super Damper Harmonic Balancer Big Block Chevy SFI - 7.074 18.1

The ATI Performance Products Super Damper ATI917064 is a high-performance harmonic balancer designed specifically for Big Block Chevy engines with supercharger applications. This patented damper is engineered to eliminate harmful torsional crankshaft vibrations that rob power and can cause engine damage in high-performance applications.

Key Features:

• 7.074-inch outside diameter steel shell construction
• SFI 18.1 certified for competition use in NHRA and IHRA sanctioned events
• 3-ring design with computer-machined grooves and proper durometer O-rings dyno-tested for optimal damping
• Internal balance design for Big Block Chevy 396, 402, and 427 cubic inch engines
• Dual keyways (3/16" and 1/4") for supercharger drive compatibility
• 6-bolt Chevy front mounting pattern
• Laser-engraved 360-degree timing marks for precise engine tuning
• Black anodized finish for corrosion resistance
• Tunable and rebuildable design for long-term performance

ATI Super Dampers are the only crankshaft dampers designed exclusively for high-performance engines, featuring a steel inertia weight contained within the outer shell. This design provides superior vibration control at all RPM ranges, making it ideal for both racing and high-performance street applications. The damper's elastomer construction with multiple O-rings ensures maximum efficiency in controlling crankshaft harmonics that can destroy bearings, crack crankshafts, and damage other engine components.