Chevrolet GM Performance LS3 6.2L 430 HP E-Rod Crate Engine # 19421057Crate Engine, GM 6. 2L, 430 HP, LS3 E Rod, Internal Engine Balance, Aluminum Heads, Each Crate Engine Family: Chevy LS Actual Engine Displacement: 6. 2L 376 Crate Engine Cylinder Head Material: Aluminum Engine Block Material: Aluminum Advertised Compression Ratio: 10. 7: 1 Assembled: Yes Engine Balance: Internal Cam Style: Hydraulic roller, OE roller Rear Main Seal Style: 1 piece Intake Manifold Included: Yes Intake Manifold Style: Fuel Injection