BluePrint GM engines give you brute, honest horsepower that'll leave others in your rear view mirror. Produced from hand-picked, seasoned four-bolt main blocks and precision built to exacting specifications.
Power: 405 HP @ 5500 RPM, 440 ft. lbs. of torque @ 4200 RPM
Displacement: 383 CID
Bore x Stroke: 4.040” x 3.75”
Compression Ratio: 9.5:1
Recommended Fuel: 91 Octane
Block: Cast Iron, 1 piece rear seal, 4-bolt main caps with passenger side oil dip stick hole, brass freeze plugs.
Crankshaft: Cast Steel, polished, stress relieved and shot peened with chamfered oil oils
Connecting Rods: Heavy Beam with 150,000 psi bolts
Pistons: Hypereutectic Aluminum
Camshaft: Steel Flat Tappet
Cam Lift: .487” Intake / .508” Exhaust
Cam Duration @ .050”: 234 deg. Intake / 244 deg. Exhaust
Lobe Separation: 112 Degree
Cylinder Heads: Cast Iron Vortec.
Combustion Chamber: 64cc
Valves: 2.02” Intake/ 1.60” Exhaust
Rocker Arms: Stamped Steel, 1.5:1 Ratio
Valve Springs: 1.25” Diameter
Ignition Timing: Base 10 degrees BTDC, 32 degrees total
• Fully assembled long block
• Stamped Steel Chrome Valve Covers
• Melling High Volume Oil pump, pick-up and oil pan
• Aluminum Dual Plane Performance Intake
• Edelbrock Performer 750CFM Carb with manual choke
• Performance mechanical fuel pump with filter and plumbing to carb
• MSD Distributor, plugs and plug wires
• Front timing cover with 8” timing pointer
• 8” Harmonic Balancer
• Long-Style Aluminum Water Pump
• Oil Filter Adapter
• Dyno Test Sheet
BluePrint limited 30 month / 50,000 mile parts & labor warranty. Click Here to view or download warranty form.