BluePrint Engines Chev 496, 600HP Stroker Base Crate Engine # BP4967CTBluePrint Engines Chev 496, 600HP Stroker Base Crate Engine # BP4967CT BluePrint Engines 496 Stroker Crate Engine Big Block Chevy 454 Style Longblock Aluminum Heads Roller Cam HP Torque: 600 HP 568FT LBSCompression Ratio: 9. 6: 1Aluminum HeadsHydraulic Roller CamForged CrankHypereutectic Pistons BLOCK: NEW BluePrint Cast Iron Block, 454 BBCManufactured and Machined in the USA! 4 Bolt Main4. 250"Stroke, Bored . 060" over1 Piece Rear Main SealMech fuel