Performance LS3 376ci/525HP Engine is what do you get when you take Chevrolet's aggressive ASA camshaft, developed for the high-RPM world of circle track and drag racing and slip it into an LS3 6.2L engine. This 525 horsepower monster is one of their most powerful production-based crate engines, the new LS376/525! 4L60E 4 SPEED AUTO RATED TO 800 HP.The kits are made in the USA with the quality you have come to expect from Classic Performance Products.