GM Performance 19435100 LS3 6.2L Gen IV Crate Engine - 495 HPCrate Engine LS3 495 HP Crate Engine 376 Cubic Inch 495 HP GM LS Series THE HOT CAM ADDS HEAT TO THE LS3 Our engineers took a production LS3 6. 2L (376 cubic inches) and swapped the stock camshaft for the racing inspired LS Hot Cam (P N 88958753), which delivered a stunning 495 horsepower and 473 lb. ft. of torque. Thats nearly 14 percent more power and torque from a simple camshaft change! We wasted no time in adding that terrific combination dubbed