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SKU: ATI917345 | UPC: 800157031748
ATI Damper 7.425in Steel LW 8 & 4 Groove LS1-2-3-6 L76 04-09 GTO Trailblazer SS G8 3 Ring
This ATI crankshaft damper provides precise harmonic control for LS1 LS2 LS3 LS6 and L76 engines in 2004-2006 Pontiac GTO 2006-2009 Chevrolet Trailblazer SS and 2008-2009 Pontiac G8 GT models. The 7.425 inch lightweight steel construction with 8 and 4 grooves matches OEM pulley specifications for direct bolt-on fit and accessory drive compatibility. It absorbs crankshaft vibrations to enable higher RPM operation reliable power delivery and extended engine life.
Key Features
- Lightweight Steel Build: Reduces rotational mass for quicker engine revs improved throttle response and strength under forced induction or elevated horsepower levels.
- 7.425in Outer Diameter: Matches factory crank pulley dimensions for accurate belt tension accessory alignment and full drive system operation on LS-equipped vehicles.
- 8 & 4 Groove Pulley: Supports OEM serpentine belts and aftermarket upgrades through main drive and jackshaft grooves for versatile power handling.
- 3-Ring Seal Design: Secures damping elastomer with three rings to prevent oil contamination and deliver consistent vibration damping across high mileage.
- SFI 18.1 Certification: Confirms structural integrity for drag racing and street driving to guard against harmonic damage at high speeds.
Product Notes
- Inspect crank snout and threads for damage prior to install to avoid imbalance issues.
- Re-torque damper bolt after 100 miles of operation.
- Ships fully assembled with protective coating intact.
Installation Notes
- Professional installation recommended.
- Includes Grade 12.9 crank bolt torque to 240 ft-lbs then 135 degrees turn.
- Aligns with factory timing marks uses OEM woodruff key position.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2004-2006 | Pontiac | GTO | All |
| 2006-2009 | Chevrolet | Trailblazer | SS |
| 2008-2009 | Pontiac | G8 | GT |
Why Choose ATI?
- Proven leader in SFI-certified dampers for over 50 years.
- Engineered for LS engines in racing and street applications.
- Machined in USA from billet steel for exact balance and fit.
Frequently Asked Questions
-
Q: Will this damper fit a 2005 Pontiac GTO with LS2 engine?
A: Yes it bolts directly to 2004-2006 GTO LS1 or LS2 cranks with matching 7.425in pulley specs. -
Q: What shell material and inner construction?
A: Lightweight steel outer shell bonds to high-tension elastomer inner ring for vibration absorption. -
Q: What warranty coverage applies?
A: One year unlimited mileage street warranty two years competition with proper install and maintenance.
Shipping & Handling
- Method: UPS Ground
- Availability: In stock - ships same or next business day
- Packaging: Protective foam-lined box 12 x 12 x 6 inches
- Weight: 14.2 lbs product 16 lbs shipping
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