BluePrint Engines Chev 396 Stroker Engine 491hp Complete # BP3961CTCDBluePrint Engines Chev 396 SBC Stroker Engine 491hp Complete # BP3961CTCD Description: Horsepower & Torque: 491 Horsepower 509 ft. lbs. Torque Compression Ratio: 10. 4: 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 Manufactured and Machined in the USA! Cylinders are Sonic Tested for Thickness Drilled and