BluePrint Engines Chev 383 Vortec Truck Replacement Long Engine # BP38350CT1Crate Engine Family: Chevy Small Block Actual Engine Displacement: 6. 3L 383 Crate Engine Cylinder Head Material: Aluminum Advertised Compression Ratio: 10. 0: 1 Assembled: Yes Engine Balance: External Cam Style: Hydraulic roller, OE roller Rear Main Seal Style: 1 piece Intake Manifold Included: No Cylinder Heads Included: Yes Carburetor Included: No Throttle Body Included: No Distributor Included: No Oil Pan Included: Yes Valve Covers Included: Yes