ATI Performance Products 917740 Super Damper Harmonic Balancer Big Block Chevy 7.074 Inch Steel External Balance

The ATI Performance Products 917740 Super Damper is a premium harmonic balancer engineered specifically for high-performance Big Block Chevy engines. This 7.074-inch diameter damper utilizes ATI's patented elastomer design to eliminate destructive torsional crankshaft vibrations that can damage bearings and crankshafts in performance applications.

Key Features:

• Steel construction with black zinc chromate finish for durability and corrosion resistance
• External balance design with 34.5 oz. imbalance for Big Block Chevy 454-502 engines
• Exceeds SFI 18.1 specifications for racing safety requirements
• Computer-machined grooves retain precision-durometer O-rings dyno tested for optimal vibration control
• Laser-engraved 360-degree timing marks for accurate tuning and setup
• Rebuildable design allows for new O-ring installation, extending service life
• Fully captured inertia ring prevents separation and maintains timing mark accuracy

The ATI Super Damper uses two concentric rings with specially engineered O-rings between them to absorb harmful crankshaft harmonics across a wide RPM range. Unlike OEM dampers that use bonded rubber strips, this design maintains concentricity and can withstand the high RPM and extreme loads of race and high-performance street engines. The damper's unique construction provides superior protection for your engine investment while adding horsepower and torque through reduced parasitic losses.