Chev 350 275HP GM 5.7L Vortec Long Crate Engine # 12691672Crate Engine Family: Chev Small Block Actual Engine Displacement: 5. 7L 350 Crate Engine Cylinder Head Material: Cast iron Engine Block Material: Cast iron Advertised Compression Ratio: 9. 4: 1 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 Included: No Throttle Body Included: No Distributor Included: No Oil Pan Included: