ATI 7.074" 3 Ring Steel Damper Chevrolet Big Block ATI917060

Patented ATI Super Damper standard harmonic balancers are the only crankshaft dampers designed exclusively for high performance engines. Inner and outer shells are available in aluminum or steel, and contain a steel inertia weight. The inertia weights have six (2-ring design) or eight (3-ring design) computer-machined grooves to retain the proper durometer O-rings (dyno tested for each application). Whether you race or just drive on the street, ATI harmonic balancers are the perfect choice.

Product features:

• Eliminates torsional crankshaft vibrations
• Exceeds SFI 18.1 specs
• Black zinc chromate finished
• OEM equipment on a variety of crate engines
• Tunable, rebuildable, and extremely efficient at all rpm
• Laser-engraved 360 degree timing marks
• Supercharger and power steering drive pulleys available for some applications

• Engine Balance: Internal
• SFI Rating: SFI 18.1
• Degree Markings: Yes
• Degree Marking Range: 360
• Outside ⌀ (in.): 7.074 in.
• Crankshaft Pulley Bolt Hole Quantity: Three
• Keyway Quantity: One
• Harmonic Balancer Material: Steel
• Harmonic Balancer Construction: Elastomer
• Harmonic Balancer Color: Black zinc chromate
• Mounting Hardware Included: No
• Quantity: Sold individually.

• Chevrolet V8 Chevy big block Mark IV 7.0L/427 1966-1969
• Chevrolet V8 Chevy big block Mark IV 6.5L/396 1966-1970
• Chevrolet V8 Chevy big block Mark IV 6.6L/402 1970-1972