GM LS V8 Engine; 7.0L/ 427 Cubic Inch; Automotive; 625 Horsepower/ 565 Foot Pounds of Torque; Aluminum Cylinder Heads; 11:1 Compression Ratio; 4.06 Inch Bore/ 4.125 Inch Stroke; Internally Balanced; With Cylinder Heads/ Forged Steel Crankshaft/ Forged Pistons/ Hydraulic Roller Camshaft/ 6 Bolt Main Block/ 1 Piece Rear Main Seal/ Forged 6.25 Inch Connecting Rods/ Timing Cover/ LS3 Intake Manifold