ATI ATI Damper - 6.78in - Alum - 6/4 Grv - 10 Percent UD - LS1/LS2 - F & V Body - 10 Per UD A/C - 3 Ring
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ATI Damper - 6.78in - Alum - 6/4 Grv - 10 Percent UD - LS1/LS2 - F & V Body - 10 Per UD A/C - 3 Ring

ATI
APPATI917276
800157029677
Crankshaft Dampers
1 Units In Stock - Ships Next Business Day
$ 498.50
$ 498.50

SKU: ATI917276 | UPC: 800157029677

ATI Damper 6.78in Aluminum 6/4 Groove 10% Underdrive LS1/LS2 F-Body GTO 10% UD A/C 3 Ring 1998-2006

This ATI crankshaft damper provides precise harmonic vibration control for LS1 and LS2 engines in 1998-2002 F-body Camaro Firebird and 2004-2006 Pontiac GTO vehicles. The 6.78-inch aluminum shell with integrated 10% underdrive pulley reduces accessory drag to gain 8-12 horsepower at the wheels while using stock belt routing. SFI 18.1 certification supports high-RPM durability for street and drag strip use.

Key Features

  • Aluminum Shell: Lightweight at 10.9 lbs reduces front-end rotational mass for quicker engine response
  • 10% Underdrive Pulley: Lowers alternator water pump and A/C speeds by 10% to recover 8-12 HP at the wheels
  • 6/4 Groove Pattern: Matches stock LS pulley bolt pattern with 6-rib main 4-rib A/C grooves for direct bolt-on fit
  • SFI 18.1 Certified: Exceeds NHRA IHRA standards for high-performance and drag racing safety
  • 3-Ring Timing Marks: Clear white etched rings simplify TDC alignment during cam timing and degreeing

Product Notes

  • Internally balanced for Gen III/IV LS1 LS2 LS6 cranks no balance issues
  • Elastomer construction absorbs crank flex and harmonics effectively
  • Ships ready-to-install with Grade 12.9 crank bolt included

Installation Notes

  • Professional installation recommended.
  • Torque crank bolt to 37 ft-lbs then 90 degrees using ARP moly lube
  • Compatible with stock LS timing covers no modification required

This Part Fits

Year Make Model Submodel
1998-2002 Chevrolet Camaro SS Z28 Base V8
1998-2002 Pontiac Firebird Trans Am WS6 Formula V8
2004-2006 Pontiac GTO Base V8

Why Choose ATI?

  • Proven in NHRA Pro Stock and Top Sportsman racing for decades
  • CNC-machined in the USA from billet aluminum and steel
  • Precision assembly maintains TDC accuracy within 1 degree

Frequently Asked Questions

  • Q: Will this damper fit my 2000 Camaro SS LS1 with A/C?
    A: Yes it bolts directly to 1998-2002 F-body LS1 engines retaining full A/C function with stock belts
  • Q: What material is the shell and inertia ring?
    A: 6061-T6 aluminum shell with steel inertia ring bonded in high-strength elastomer
  • Q: What is the warranty and install torque spec?
    A: ATI provides 1-year warranty torque main crank bolt 37 ft-lbs initial plus 90 degree turn

Shipping & Handling

  • Method: UPS Ground
  • Availability: In stock - ships same or next business day
  • Packaging: Secure foam-lined box
  • Weight: 10.9 lbs net 12 lbs shipping

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