Chev LSX454 Long Engine Crate Motor 620hp Chevrolet Performance # 19417357Crate Engine, Long Block, LSX454, Hydraulic Roller Tappet, 1 Piece Rear Main, Orange Valve Covers, Gen III IV LS, Chevy, Each Crate Engine Family: Chevy LS Actual Engine Displacement: 7. 4L 454 Crate Engine Cylinder Head Material: Aluminum Engine Block Material: Cast iron Assembled: Yes Engine Balance: Internal Cam Style: Hydraulic roller, OE roller Rear Main Seal Style: 1 piece Intake Manifold Included: No Cylinder Heads Included: Yes Carburetor