The Edelbrock supercharger Stage 1 Street system part #1577 is for 2003-06 Silverado and Sierra 1500 and 2007 Sierra Classic vehicles. This supercharger system works with the 6.0L, 4.8L and 5.3L Gen III engines and increases the performance of the 6.0L engine to 348 horsepower and 381 ft-lbs at the rear wheels, 4.8L engine to 339 horsepower and 359 ft-lbs of torque at the rear wheels and the 5.3L engine to 345 horsepower and 381 ft-lbs of torque at the rear wheels. The core of this system is the Eaton Gen VI 2300 TVS rotating assembly with a four-lobe design with 160 degrees of twist for maximum flow, minimum temperature rise and quiet operation for excellent drivability. We also designed our superchargers with an integrated bypass valve to help eliminate parasitic loss under light throttle, improving mileage potential. Our unique and efficient inlet configuration results in a shorter, less restrictive intake path for improved airflow, without the need for a jack-shaft. Keeping the air cool is a high-capacity air-to-water intercooler and low-temp heat exchanger. The Edelbrock #1577 system is 50-state emissions legal. The supplied tune is intended for completely stock vehicles with the exception of a cat-back exhaust.

This Part Fits:

Year	Make	Model	Submodel
2003-2005	Chevrolet	Avalanche 1500	Base
2005-2006	Chevrolet	Avalanche 1500	LS
2005-2006	Chevrolet	Avalanche 1500	LT
2003	Chevrolet	Avalanche 1500	North Face
2003	Chevrolet	Avalanche 1500	On Road Edition
2003	Chevrolet	Avalanche 1500	WBH
2004-2006	Chevrolet	Avalanche 1500	Z66
2003-2006	Chevrolet	Avalanche 1500	Z71
2003-2005	Chevrolet	Silverado 1500	Base
2004-2006	Chevrolet	Silverado 1500	Hybrid
2003-2006	Chevrolet	Silverado 1500	LS
2003-2006	Chevrolet	Silverado 1500	LT
2003-2006	Chevrolet	Silverado 1500	SS
2003-2006	Chevrolet	Silverado 1500	WT
2004-2005	Chevrolet	Silverado 1500	Z71 Off-Road
2007	Chevrolet	Silverado 1500 Classic	Hybrid
2007	Chevrolet	Silverado 1500 Classic	LS
2007	Chevrolet	Silverado 1500 Classic	LT
2007	Chevrolet	Silverado 1500 Classic	SS
2007	Chevrolet	Silverado 1500 Classic	WT
2005	Chevrolet	Silverado 1500 HD	Base
2003,2005	Chevrolet	Silverado 1500 HD	LS
2003,2005-2006	Chevrolet	Silverado 1500 HD	LT
2003-2005	GMC	Sierra 1500	Base
2003-2006	GMC	Sierra 1500	Denali
2005-2006	GMC	Sierra 1500	Hybrid
2003,2006	GMC	Sierra 1500	SL
2003-2006	GMC	Sierra 1500	SLE
2003-2006	GMC	Sierra 1500	SLT
2003-2006	GMC	Sierra 1500	WT
2007	GMC	Sierra 1500 Classic	Denali
2007	GMC	Sierra 1500 Classic	Hybrid
2007	GMC	Sierra 1500 Classic	SL
2007	GMC	Sierra 1500 Classic	SLE
2007	GMC	Sierra 1500 Classic	SLT
2007	GMC	Sierra 1500 Classic	WT
2003,2005-2006	GMC	Sierra 1500 HD	SLE
2003,2005-2006	GMC	Sierra 1500 HD	SLT