GM Small Block V8 Engine; 6.6L/ 400 Cubic Inch; Automotive; 511 Horsepower/ 480 Foot Pounds of Torque; Cast Iron Block/ Aluminum Cylinder Heads; 9.5:1 Compression Ratio; 4.125 Inch Bore/ 3.75 Inch Stroke; Front: Internally Balanced/ Rear: Externally Balanced; With Cylinder Heads/ Forged Steel Crankshaft/ Forged Pistons/ Hydraulic Roller Camshaft/ 4 Bolt Main Block/ 1 Piece Rear Main Seal/ 5.7 Inch Forged Steel Connecting Rods/ Valve Covers/ Oil Pan/ Timing Cover/ Power Adder Engine/ Dual Keyway Damper