Lingenfelter ZR1 LS9 Corvette Supercharger Pulley Upgrade 09-11

The Lingenfelter supercharger pulley upgrade kit is designed to enhance  the new 2009-2010 LS9 Corvette ZR1 supercharged engine.
-This upgrade  kit produces excellent horsepower and torque improvements over the  factory 638 horsepower and 604 lbs ft of torque while maintaining a safe  level of boost and supercharger RPM.   Testing at Lingenfelter has  shown 680 BHP and 660 lbs ft of torque with the Lingenfelter pulley  upgrade kit installed.
-The pulley kit will overdrive the supercharger 19% to raise boost on a stock engine by 3-4 psi.  The stock serpentine  belt is retained but the installation will require ECM programming to  adjust ECM overboost limits.
-Parts included in kit: - 2.60 inch diameter steel supercharger drive pulley powder coated black - 11 rib - 100 mm aluminum double bearing idler assembly - Lingenfelter LS9 solid supercharger isolator coupling - Installation kit with everything you need to do the installation