GM LS Engine; 7.0L/ 427 Cubic Inch; Automotive; 3 Bolt Main Cap; 4-1/8 Inch Stroke; Internally Balanced; With Forged Steel Crankshaft/ Forged Pistons/ Hydraulic Roller Camshaft/ 6-1/8 Inch Forged Connecting Rods/ Oil Pan/ Timing Cover/ Harmonic Balancer