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  • GM Small Block Compatible 383 c.i. Engine - 432 Horsepower - Power Adder - Short Block Plus
  • GM Small Block Compatible 383 c.i. Engine - 432 Horsepower - Power Adder - Short Block Plus
  • GM Small Block Compatible 383 c.i. Engine - 432 Horsepower - Power Adder - Short Block Plus

GM Small Block Compatible 383 c.i. Engine - 432 Horsepower - Power Adder - Short Block Plus

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  • Detail
    • Detail

      Overview:

      BluePrint BP38321SP GM Small Block Compatible performance short block engine has been dyno tested at our factory with a Holley Classic 750cfm Carburetor and H8002K Cylinder Heads and produced 436 horsepower and 443 minimum torque. Not every BP38321SP is Dyno tested. This performance shows the capabilities of this engine. Performance may vary depending upon what cylinder heads, fuel system and intake manifold you choose. This engine features a 4-inch bore which mathematically yields a 377ci with a 3.75-inch stroke. This customizable engine comes with timing cover, harmonic balances, oil pan, hydraulic roller cam, with a 1.6-inch rocker arm, and a high-volume oil pump.

      Description:

      • Horsepower & Torque: 432 Horsepower / 450 ft. lbs. Torque
      • Compression Ratio: 9.5:1
      • BluePrint Engines Hydraulic Roller Cam
      • BluePrint Engines Forged Pistons
      • BluePrint Engines Forged Crank

      Block:

      • BluePrint Engines High Strength Cast Iron Block
      • Cylinders Honed on Computer-Controlled Machine to Within .0002 Straightness and Roundness
      • Cylinders are Sonic Tested for Thickness
      • Align Honed Main Bearing Bore
      • Passenger Side Dipstick
      • 1 Piece Rear Main Seal
      • 4 Bolt Main
      • 4.00" Bore

      Rotating Assembly:

      • New Forged Crankshaft
      • 3.75" Stroke
      • Forged Pistons, 18cc Dish
      • Forged Rods with 150,000 PSI Bolts

      Cam Specs w 1.5 Rocker Ratio:

      • Hydraulic Roller
      • .495 Intake / .502 Exhaust Lift
      • 220 Intake / 224 Exhaust Duration
      • @ .050-114 Degree Lobe Separation

      Ignition Timing:

      • 34 Degrees Total (at 3500 RPM)

      Also Includes:

      • Heavy Duty Double Roller Timing Set
      • High Volume Oil Pump
      • Harmonic Balancer
      • Timing Cover
      • Oil Pan

      Notes:

      • This engine features a true 4-inch bore, which mathematically yields 377 CID with a 3.75-inch stroke.
      • This engine requires a non-weighted 8" harmonic balancer (included), and late 350ci weighted flexplate/flywheel.
      • The HP and Torque numbers were derived from dyno testing with a 750cfm carb, and with H8002K cylinder heads installed.
      • Not for use in pollution-controlled vehicles.

      *A Bronze Distributor Gear is NOT Recommended on this Engine.

    • Description
      This engine is designed and manufactured to factory specs for the specified vehicles below. It's manufactured using tighter machining tolerances, higher quality components, and finer balancing of the rotating assembly to make this engine better than the original while still meeting the description of a “replacement” engine.
    • Warranty

      The satisfaction of our customers is our highest priority at BluePrint Engines. We use quality components to balance your engine's rotating assembly within two grams of spec. We dyno test your crate engine and certify that it's ready to deliver horsepower and torque.

      We give your BluePrint engine the industry's best-in-class warranty for 30-months / 50,000 miles — with the extra confidence only BluePrint can provide. Our warranty applies to individual or professional installations and is fully transferable.

    • Notes
      • Designed as factory replacement long block for specified vehicles and year ranges, using OEM specification parts. Customer to re-use existing intake manifold, ecu (if equipped), exhaust, fuel system etc. Modification or replacement of provided tinware, and minor accommodations such as dipstick location may be required.
      • Specifically designed as an OEM spec engine to meet emissions requirements of the specified vehicles, to meet the criteria of "replacement engine" in all 50 states.
      • If your vehicle was originally equipped with a 2-piece rear main seal crankshaft, a new flex plate or flywheel will be required. Note for those same early applications, this block features the dipstick on the Passenger side.
      • Must verify with application list linked above for fitment.
    • Also Includes
      • New Valve Covers
      • Rear Sump Oil Pan
      • Timing Cover
      • Harmonic Balancer

      Recommended Break in Oil: BPP710 (Click Here)

      Recommended Service Oil: BPP10W30 (Click Here)

      Recommended Oil Filter: BPP51061 (Click Here)

    • Ignition Timing
      • OEM Specifications
    • Cam Specs
      • Hydraulic Flat Tappet
      • OEM Spec Per Listed Vehicles
    • Cylinder Heads
      • Perimeter Bolt Iron Cylinder Heads
    • Rotating Assembly
      • Cast Crankshaft
      • 3.480" Stroke
      • Forged 5.700" Connecting Rods
      • OEM Spec Pistons
      • Internally Balanced Front - Externally Balanced Rear Engine
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