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: 280 HP @ 4600 RPM, 388 ft. lbs. of torque @ 2600 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: .435” Intake / .454” Exhaust
Cam Duration @ .050”: 209 deg. Intake / 216 deg. Exhaust
Lobe Separation: 110 Degree
Cylinder Heads: Cast Iron Vortec.
Combustion Chamber: 68cc
Valves: 2.02” Intake/ 1.60” Exhaust
Rocker Arms: Stamped Steel, 1.5:1 Ratio
Valve Springs: 1.25” Diameter
• Fully assembled long block
• Stamped Steel Chrome Valve Covers
• Melling High Volume Oil pump, pick-up and oil pan
• Aluminum Dual Plane, TBI, Performance Intake
• Front timing cover with 8” timing pointer
• Custom Programmed ECM
• Oil Filter Adapter
• Dyno Test Sheet
Notes:When ordering this engine BluePrint Engines will also need you PROM and Service numbers from your vehicle.This engine was designed to run with all stock engine components such as throttle body, fuel pump etc.
BluePrint limited 30 month / 50,000 mile parts & labor warranty. Click Here to view or download warranty form.