Crate Engine, BluePrint SB 400ci, Long Block

400ci Small Block Long-Block Crate Engine by BluePrint Engines®

500-hp / 510 lb-ft core uses forged 3.75-inch crank and forged pistons by BluePrint Engines®.

BluePrint Engines®' 400ci Small Block Long Block is rated at 500 hp and 510 lb-ft with 10.3:1 compression. It combines forged 3.75-inch-stroke crankshaft, forged pistons, 64cc/220cc-runner aluminum heads and hydraulic-roller camshaft (.555/.576 lift; 236/242° @ .050, 110° LSA). Long-block configuration supplies the 500-hp assembled core while leaving induction and front accessory drive to the installer.

Additional Technical Specifications • HP & Torque: 500 HP / 510 FT LBS • Compression Ratio: 10.3:1 • Hydraulic Roller Cam Block: • NEW BluePrint Cast Iron Block • Manufactured and Machined in the USA! • 4-Bolt Main • 4.125" Bore • 1-Piece Rear Main Seal • Mech fuel pump provision: Yes • Passenger Side Dipstick • Drilled and tapped for clutch linkage Rotating Assembly: • 3.750" Stroke • Forged I Beam 5.700" connecting rods w/ 150,000 psi bolts • Internal Front/ External Rear Cylinder Heads: • BluePrint Aluminum Cylinder Heads • 64cc chamber • 2.08" intake/1.60" exhaust valves • 220cc intake/67cc exhaust runners Cam Specs: • Cam Type: Roller • .555 Intake .576 Exhaust • 236 Intake / 242 Exhaust duration • @ .050 - 110 ° lobe separation Ignition Timing: • 10-16° initial and total timing 32-34° at 3500 RPM Also Includes: • Valve covers, oil pan and timing cover • Dyno test results shipped with engine Warranty: • 30 month / 50,000 mile Notes: • NEW BluePrint block manufactured and machined in the USA! • The performance aluminum cylinder heads on this engine feature a .500 raised port vs OEM.