Blueprint Engines BP38318SP 383ci SB-Chevy Short Block+ Assembly

    Blueprint Engines BP38318SP 383ci SB-Chevy Short Block+ Assembly

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    • 3.75'' Stroke Cast Iron...
    • 4-Bolt Main...
    • Hypereutectic...
    • 10.0:1 Compression Ratio w/64cc...
    • Hydraulic Roller Camshaft .571''/...

    Details: 383ci SB-Chevy Short Block+ Assembly

  • 3.75'' Stroke Cast Iron Crankshaft
  • 4-Bolt Main Block
  • Hypereutectic Pistons
  • 10.0:1 Compression Ratio w/64cc Heads
  • Hydraulic Roller Camshaft .571''/ .574''
  • 1-Piece Rear Main Seal
  • External Balance

    Note: Horsepower numbers were achieved with Blueprint p/n 138-H8002K Cylinder Heads installed on this short block assembly.


    Horsepower: 430
    Torque: 450


    Engine Block:

  • New Blueprint Engine Block
  • 4.030'' Bore
  • Nodular Iron 4-Bolt Splayed Main Caps
  • 1-Piece Rear Main Seal


    Rotating Assembly:
  • 3.75'' Stroke Cast Iron Crankshaft
  • Hypereutectic Pistons - 10.0:1 Compression Ratio when using 64cc Combustion Chamber Cylinder Heads
  • External Engine Balance
  • 8'' Weighted Harmonic Balancer Included
  • Late 350 Weighted Flexplate/Flywheel Recommended (Not Included)


    Camshaft Specs:
  • Hydraulic Roller
  • Includes Roller Lifters
  • Duration @ .050'' Lift: 216° Intake / 225° Exhaust
  • Lift: .571'' Intake / .574'' Exhaust
  • Lobe Separation: 114°


    Other Features:
  • Timing Chain
  • Chrome Timing Cover
  • Oil Pan
  • Brass Freeze Plugs
  • Engine Break-In Procedure

    Use or break-in oil or conventional (non-synthetic) multi-viscosity oil with zinc additive for the first 500 miles of operation. Avoid hard acceleration for sustained periods. Periodically change the engine speed while driving to help seat the rings. While the engine is running, be sure to check oil pressure and coolant temperature, and check for fluid leaks, such as oil, transmission fluid, fuel, and coolant/antifreeze. Also listen for any unusual sounds. Should you hear an unusual sound, shut the engine off, check for the source, and correct it.

    Engines with flat tappet cams only - Start the engine and bring it to 2,000 RPM. Get the engine running...

    Package Dimensions: 32.0 x 30.0 x 27.0 inches

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