ATI Damper 7.074in Steel Chevy Big Block w/ 2nd 1/4 Key 3 Ring 1Pc ATI917060K
High-Strength Steel Harmonic Damper with Dual Keyway for Chevy Big Block Engines
The ATI Super Damper (PN ATI917060K) is a 7.074-inch diameter, steel, one-piece harmonic balancer engineered for Chevy Big Block (BBC) performance engines. Featuring a 3-ring inertia assembly and an added secondary 1/4-inch keyway, this damper provides rock-solid crankshaft control and superior resistance against torsional vibrationeven in the most extreme horsepower applications.
Ideal for high-RPM or forced-induction BBC builds, the ATI917060Ks additional keyway increases strength and prevents slippage under heavy torque loads. Built from billet steel and SFI 18.1 certified, it delivers the reliability demanded by professional racers and engine builders.
Performance Highlights
- Dual Keyway Design: Includes secondary 1/4" key for enhanced crankshaft security and torque resistance.
- 7.074 Outer Diameter: Compact, efficient design for street and racing Big Block applications.
- All-Steel, 1-Piece Construction: Delivers maximum strength and long-term reliability.
- 3-Ring Inertia Assembly: Provides precise harmonic balancing across all RPM ranges.
- SFI 18.1 Certified: Legal for all major racing organizations and safety-approved for competition.
Quick Specs
- Part Number: ATI917060K
- Application: Chevy Big Block Engines
- Diameter: 7.074 in.
- Construction: 1-Piece Forged Steel
- Inertia Assembly: 3-Ring Design
- Keyways: Dual (Includes 2nd 1/4 Key)
- Material: Billet Steel
- Finish: Black Zinc Coating
- Safety Rating: SFI 18.1 Certified
- Compatibility: ATI Super Damper Systems
Install Note: Designed for high-power BBC builds requiring dual keyways for added crankshaft stability and damper security.
Why Choose the ATI Super Damper 917060K?
When pushing your Chevy Big Block to its limits, crankshaft harmonics can destroy bearings, main caps, and rotating assemblies. The ATI 917060K Super Damper eliminates these issues with its 3-ring design and added 1/4 keyway, ensuring bulletproof reliability under extreme load. Its the proven choice for engine builders, racers, and performance enthusiasts demanding precision and strength.
FAQs
Q: What engines does this damper fit?
A: Designed for Chevy Big Block V8 engines, including 396, 427, 454, 502, and 572 cubic-inch configurations.
Q: Why does it have a second keyway?
A: The additional 1/4 key provides extra security under high torque loads, preventing damper slippage during racing or boosted operation.
Q: Is it approved for competitive use?
A: Yes. Its fully SFI 18.1 certified and approved for NHRA, IHRA, and other major racing bodies.
Vehicle Fitment
- Chevy Big Block Engines (396, 427, 454, 502, 572)
- Common Applications: Camaro, Chevelle, Nova, Corvette, Impala, and Custom BBC Race Builds
About Beefcake Racing
Beefcake Racing is your trusted source for Chevy Big Block performance parts, offering expert support and unbeatable pricing. Whether you're upgrading with an ATI Super Damper or building a full high-horsepower BBC engine, our team helps you get it right the first time. Contact us today at sales@beefcakeracing.com or call 1-855-827-7223 for personalized advice from true gearheads.
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