BluePrint Engines Chev 502 Pro Series Engine With Sniper Kit # PS502CTFBluePrint Engines 502CI ProSeries Crate Engine Big Block GM Style Base Dressed Longblock with Fuel Injection Aluminum Heads Roller Cam This engine comes with sniper set up , not carburetor set up as pictured HP & Torque: 621 HP 560 FT LBS Compression Ratio: 10. 0: 1 Aluminum Heads Hydraulic Roller Cam Forged Crank Forged Pistons BLOCK: NEW BluePrint Cast Iron Block Manufactured and Machined in the USA! 4 Bolt Main 4. 466" Bore 1 Piece Rear Main Seal