ATI Damper – 6.78in – AL – 6/4 Grv – 10 Per UD – LS1/2/3/6 – 97-13 Y Body – 10 Per UD A/C – 3 Ring

SKU: ATI917278 | UPC: 800157029707 ATI Damper 6.78in AL 6/4 Grv 10% Underdrive LS1/2/3/6 1997-2013 Corvette Y-Body A/C 3 Ring This ATI crankshaft damper controls harmonic vibration in GM LS1 LS2 LS3 LS6 engines for 1997-2013 Chevrolet Corvettes. The 6.78-inch aluminum shell with 10% underdrive on 6-rib main and 4-rib A/C pulleys reduces accessory drag to increase horsepower and torque. SFI 18.1 certification provides reliability at high RPMs up to 10,000 in racing or street applications. Key Features 6.78in Aluminum Shell: Weighs 6.8 lbs to lower rotational mass for faster engine revs and sharper throttle response 6/4 Groove 10% Underdrive: 6-rib serpentine and 4-rib A/C pulleys run accessories at reduced speed to cut power loss and engine bay heat 3-Ring Internal Balance Design: Matches OEM LS crankshaft neutral balance for direct fit with no vibration at high RPMs SFI 18.1 Certified: Bonded elastomer and steel hub withstand drag racing demands for consistent performance Precision CNC Machined: TDC mark and keyway ensure exact alignment on LS cranks for precise timing and stability Product Notes Designed for vehicles equipped with factory A/C systems Use ATI crank pins ATI-915000 or equivalent for secure installation Ships in protective foam-lined box measuring 10in x 10in x 8in Installation Notes Professional installation recommended. Remove OEM damper with harmonic balancer puller tool Torque to 240 ft-lbs using ATI installation tool ATI-9172 includes Woodruff key This Part Fits Year Make Model Submodel 1997-2004 Chevrolet Corvette All LS1/LS6 2005-2007 Chevrolet Corvette All LS2 2008-2013 Chevrolet Corvette All LS3 Why Choose ATI? Drag racing leader since 1964 with NHRA Pro Stock wins Bonded assembly survives 12,000 RPM abuse Made in USA with billet aluminum and high-grade elastomer Frequently Asked Questions Q: Does this fit 2008-2013 LS3 Corvettes with A/C? A: Yes direct bolt-on for all 2008-2013 Chevrolet Corvettes with LS3 and factory A/C matches 6.78in crank pulley diameter Q: What material is the shell and hub? A: 6061-T6 aluminum shell with steel inertia ring and hub black anodized finish resists corrosion Q: What warranty coverage applies? A: ATI limited lifetime warranty against defects register online for full protection Shipping & Handling Method: UPS Ground or FedEx Availability: In stock – ships same or next business day Packaging: Secure foam-lined cardboard box 10 x 10 x 8 inches Weight: 6.8 lbs product weight Reviews There are no reviews yet. Be the first to review “ATI Damper – 6.78in – AL – 6/4 Grv – 10 Per UD – LS1/2/3/6 – 97-13 Y Body – 10 Per UD A/C – 3 Ring” Cancel replyYour email address will not be published. Required fields are marked *Your rating * Rate… Perfect Good Average Not that bad Very poor Your review *Name * Email * Save my name, email, and website in this browser for the next time I comment.