SPECIFICATIONS 347 cubic inch 405 hp @ 6000 rpm (with headers, and a 650 CFM Holley carburetor not included) 10:1 Compression ratio (nominal) Forged pistons Forged steel cap screw connecting rods Hydraulic roller camshaft, .528" lift intake and exhaust, duration at .050" is 226 degrees intake and exhaust Double roller timing chain set High-performance rear sump circle track oil pan Forged steel crankshaft MSD billet distributor Ford Racing aluminum "Z" cylinder heads with 2.02" intake valves and 1.60" exhaust valves Single plane "Victor Jr." intake manifold New heavy-duty race block, oil and water pumps, performance oil pan, and high-performance harmonic damper Depending on your application, a different timing cover, water pump, performance oil pan and pickup may be required. See installation notes Engine is sealed for circle track competition where rules allow Engine is internally balanced, "0" balance flywheel required Flywheel is not included Designed for use in NASCAR Late Model Series Cam timing change to conform with NASCAR rules