Brian Tooley Racing BTR Truck Norris NSR Camshaft for GM Gen III IV Trucks 4.8 5.3 6.0Specs: 212 22X, . 498 . 498, 107 LSA Developed from the success of the original Truck Norris, this NSR (No Springs Required) camshaft will deliver a roundhouse kick in the pants to your 1999 2013 Silverado or Sierra. Developed from hundreds of hours of in house cam lobe design and dyno testing, this camshaft has more power and torque everywhere in the curve compared to our legendary V2 truck cams.

CARB EO unavailable

Comes with adjustable progressive VC-20 engine mount controller and easy to install quick-connect fittings

The HEMI rocker stud and nut assembly allows for improved clamping load

Update your obsolete spray-bar type nitrous system with one of our Square Flange Perimeter Plate Conversion Kits

and impact mood

(2) BTR LS1/LS2/LS3 Header Gasket BTR17944

FASTER ACCELERATION: The Pedal Commander system eliminates the delay from your electronic gas pedal

Note: This kit will not work for you if the the 8th digit of your vin is "C"

& V engines typically run 1

XFI RPM 224/228 Hydraulic Roller Cam for GM LS GEN III/IV

Be sure to consider the Amp’d switch kits to get all 6 of the potential sensitivity modes and the on the fly adjustment

-All short block are balanced and assembled in house at AMS Racing