ATI Super Damper 15% Overdrive (20072014 Shelby GT500 / Super Cobra Jet) 918046
High-Performance 15% Overdrive Harmonic Balancer for Shelby GT500 & Super Cobra Jet
The ATI Super Damper 15% Overdrive (PN 918046) is built for serious Ford enthusiasts pushing the limits of their Shelby GT500 or Super Cobra Jet. Designed with a 10-groove supercharger pulley that delivers a 15% overdrive ratio, this damper increases blower speed for significant boost gains and improved throttle response. Whether youre running a stock Eaton setup or a high-output supercharger, this damper keeps your rotating assembly balanced, efficient, and safe under pressure.
Featuring a billet aluminum shell, OEM-size 6-rib accessory pulley, and a robust design tested under competition conditions, the ATI Super Damper exceeds SFI 18.1 certification and is NHRA-approved for Super Cobra Jet use. Proven on track and trusted by top engine builders, its the go-to choice for GT500 owners who want maximum performance and reliability.
Performance Highlights
- 15% Overdrive: Increases supercharger drive speed for higher boost and more power.
- 10-Groove Supercharger Pulley: Provides maximum belt contact for consistent power delivery.
- NHRA Approved: Certified for Super Cobra Jet competition applications.
- SFI 18.1 Certified: Meets all sanctioning body safety requirements.
- Precision-Balanced: Eliminates harmful crankshaft harmonics across all RPM ranges.
- Durable Construction: Aluminum shell design for strength and longevity.
Quick Specs
- Part Number: 918046
- Application: 20072014 Ford Shelby GT500 / Super Cobra Jet
- Drive Type: 10-Groove Supercharger Pulley / 6-Groove Accessory Pulley
- Overdrive Percentage: 15%
- Outer Diameter: 8.12 in.
- Weight (without hub): 11.85 lbs
- Material: Aluminum Shell
- Construction: Elastomer
- Finish: Black Anodized
- Safety Rating: SFI 18.1
- Approval: NHRA Super Cobra Jet Certified
- Install Note: Requires 88 belt with stock blower pulley; 2013 models with oil cooler need adapter.
- Mounting Hardware: Not Included
Why Choose the ATI Super Damper 918046?
OEM dampers simply arent designed for the boost levels and RPM demands of the GT500 platform. The ATI Super Damper eliminates crankshaft vibration, increases reliability, and safely supports higher supercharger speeds. With its competition pedigree and proven design, its the ideal choice for drivers chasing reliable horsepower both on the street and at the track.
FAQs
Q: How much boost does a 15% overdrive pulley add?
A: Typically, this setup increases blower speed enough to gain several pounds of boost depending on pulley size and tune.
Q: Is this damper NHRA legal?
A: Yes. Its NHRA-approved for the Super Cobra Jet class and carries full SFI 18.1 certification.
Q: What belt length do I need?
A: Standard GT500 models require an 88 belt when using the stock diameter blower pulley.
Vehicle Fitment
- 2007 Ford Shelby GT500 5.4L Supercharged
- 2008 Ford Shelby GT500 5.4L Supercharged
- 2009 Ford Shelby GT500 5.4L Supercharged
- 2010 Ford Shelby GT500 5.4L Supercharged
- 2011 Ford Shelby GT500 5.4L Supercharged
- 2012 Ford Shelby GT500 5.4L Supercharged
- 2013 Ford Shelby GT500 5.8L Supercharged
- 2014 Ford Shelby GT500 5.8L Supercharged
- 20082014 Ford Mustang Super Cobra Jet
About Beefcake Racing
Beefcake Racing is your trusted source for GT500 and Mustang performance parts, offering expert support and unbeatable pricing. Whether you're upgrading with an ATI Super Damper or adding a complete power package, our team helps you build 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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