BTR Stage 4 Truck Cam V2 BTR32430090 Fits 1999-2013 GM LS-Based Engines 4.8L 5.3L 6.0L 6.2L 224/230 .553/.553" 109LSA, 3 Bolt Pattern The Stage 4 grind has made a name for itself not only in the truck world, but in the street car market as well. This camshaft is suited for the consumer that wants maximum peak power, and isn't looking to use their truck as a work horse in the towing department. The grind moves the powerband upstream, so bottom end torque will not be ideal for the every day tow vehicle. It has the distinct 'lope' that many are looking for when sitting at a stoplight! A 2800-3200rpm stall converter is recommended. VVT engines will require a VVT delete kit. If installing in an engine originally equipped with a 1-bolt camshaft, a 3 bolt conversion kit will be required.