This is the 2004 LS1 production engine that is used in the new 2004 Pontiac GTO. It produces 320 horsepower and 330 ft./lbs of torque, which makes it a great engine for just about any performance vehicle. This crate engine comes less ECM and Wire Harness but does come with block, crank, rods, pistons, cam, aluminum cylinder heads, water pump, intake manifold, injectors, cable throttle body, exhaust manifolds, balancer and flexplate.