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Does 490 Horsepower as an everyday driver, utilizing the stock camshaft grab your attention! SLP has taken the guesswork out of upgrading your 2005-06 GTO to 490hp (flywheel) with the 490HP PerformancePac™ from SLP Performance Parts. Each 490 horsepower package includes our SLP/L92 Cylinder Head-and-L76 Manifold Package, pushrods, Blackwing™ cold-air filter, complete header to cat-back exhaust system, 160° thermostat, harmonic balancer/under-drive pulley and a DiabloSport II Programmer with SLP Custom Tuning that will allow you to plug in and download the custom SLP 490HP tune into the vehicle. All of these components work together to significantly improve performance without adversely affecting drivability. Best of all, you'll save $125 over the cost of purchasing the parts individually!
NOTE: Please reference part number 12292 for a complete detailed description of the SLP/L92 Cylinder Head and Manifold Package used in this 490HP Package. Requires 2 new belts, Dayco # 760K6 and # 405K4 or equivalent to properly install the balancer/pulley.
This ZL500HP PerformancePac™ includes the following items:
- Harmonic Balancer/Underdrive Pulley (100226)
- 160° Thermostat (100228)
- Blackwing™ Air-Filter (25013B)
- DiabloSport II Programmer with SLP Custom Tuning (27010T)
- Long Tube Ceramic Coated Headers (30168)
- Loud Mouth™ Exhaust System (31560)
- Pushrods, Chrome Moly 7.375" Length set of 16 (53106)
- SLP/L92 Cylinder Head-and-Manifold Package (12292)
- Installation Kit, L92 Cylinder Head-and-Manifold (12507)
- 490HP Fender Badges (pair)
SLP PT# 29052 - SLP 490HP Performance Pac with Loudmouth I Exhaust - 2005-2006 Pontiac GTO |
LS1 F-Body (1998-2002)
Chassis & Suspension
