BluePrint Engines BP38321SP - 383 CID GM Small Block Compatible Shortblock Plus - 432HP

Horsepower 432HP Torque 450FT/LBS Compression Ratio 9.5:1 w/ 64cc head & .041 thick gasket, 18cc dish volume. Block New BluePrint block, 1 piece rear main sale, 4 bolt main Pistons Forged Rotating Assembly Forged Steel Crank - 3.75 in. Stroke and 5.7 in. Rods Heads N/A Camshaft Specs Hyd Roller, .495 Int / .502 Exh and 220 Int / 224 Exh dur @ .050, 114 LSA BluePrint 383 Short Block SKU: BP38321SP Start your high-performance build with this dyno-proven BluePrint Engines 383ci (377ci actual) Short Block (BP38321SP). While tested with a 750cfm carburetor and H8002K heads to achieve 436 HP and 443 lb-ft of torque, this short block offers a powerful foundation for your custom build. Actual performance will vary based on your choice of heads, intake, and fuel system. Key Features: Dyno-Proven Potential: Tested to 436 HP / 443 lb-ft Torque (with specific components) True 377ci Displacement: 4.00" Bore x 3.75" Stroke   Forged Internals: Crankshaft, Pistons, Connecting Rods   BluePrint High-Strength Cast Iron Block (4-Bolt Main)   High Volume Oil Pump Hydraulic Roller Cam with 1.6 Rocker Arms   Heavy Duty Double Roller Timing Set This BluePrint Short Block Includes: Oil Pan Timing Cover Harmonic Balancer (Non-weighted 8") Build Your Custom Powerhouse: This short block allows you to customize your top end completely, allowing you to choose the perfect cylinder heads, intake manifold, and fuel system to meet your specific performance goals. The engine features a true 4-inch bore and a 3.75-inch stroke, resulting in a 377 cubic-inch displacement.   Important Notes: This is a Short Block ONLY. Cylinder heads, intake manifold, carburetor/EFI, distributor, and other accessories are not included and must be sourced separately. Requires a non-weighted 8" harmonic balancer (included) and a late 350ci weighted flexplate/flywheel.   HP and Torque numbers are based on dyno testing with a 750cfm carb and H8002K cylinder heads. Your results may vary.   Not for use in pollution-controlled vehicles. A Bronze Distributor Gear is NOT Recommended. Recommended Break-in Oil: BPP710 Recommended Service Oil: BPP10W30 Recommended Oil Filter: BPP51061