GM Performance 19435104 LS3 376 6.2L Crate Engine - 525HPLS3 376 Crate Engine 6. 2L 525HP Crate Engine 376 Cubic Inch 525 HP GM LS Series A Bigger Cam For Great Performance! Chevrolet Performances LS376 525 is one of our most powerful naturally aspirated 6. 2L crate engines. Its based on the LS3, but adds our aggressive ASA camshaft to expand the performance range, particularly at high rpm, resulting in 525 horsepower and 486 lb. ft. of torque. The ASA camshaft is a hydraulic roller with . 525 inch lift on