GM Big Block Compatible 496 c.i. Power Adder Engine - 561 Horsepower - Long Block

Description:  Horsepower & Torque: 561 Horsepower / 512 ft. lbs. Torque Compression Ratio: 8.8:1 BluePrint Engines Aluminum Heads BluePrint Engines Hydraulic Roller Cam BluePrint Engines Forged Crank BluePrint Engines Forged Pistons Block: BluePrint Engines High Strength Cast Iron Block, 454 BBC Manufactured and Machined in the USA! Mech Fuel Pump Provision: Yes 1-Piece Rear Main Seal Standard Deck 4-Bolt Main 4.310" Bore Rotating Assembly: Dual Keyway Crankshaft 4.250" Stroke Forged H-beam 6.385" Connecting Rods Forged Pistons Internally Balanced Front and Rear Cylinder Heads: BluePrint Aluminum Cylinder Heads - PS8013 119cc Chamber 2.30" Intake / 1.88" Exhaust Valves 316cc Intake / 124cc Exhaust Runners Cylinder Heads Feature a .300 in. Raised Exhaust Port vs an OEM Casting Must Verify Header / Exhaust Clearance Cam Specs: Hydraulic Roller .540 Intake / .560 Exhaust Lift 242 Intake / 248 Exhaust Duration @ .050-114 Degree Lobe Separation Ignition Timing: 10-16° a