Product Summary

350, 383, 383 cu. in. Engine Displacement

    Key Specs

    MFG. Part #BP38302CT
    BrandBluePrint Engines
    Crate Engine TypeLong Block
    Engine Displacement383 cu. in.

    Need To Know

    Truck Ship

    Truck shipments must be pre-paid with a credit card, certified check or money order

    Quick and Easy Returns


    True Blue Power! BluePrints pro engine builders are enthusiasts just like you and it shows in the quality and performance of every engine they build. Each BluePrint crate engine is carefully dyno tested and ships with printed, proven results. If you’re looking serious horsepower at an affordable price, BluePrint Engines is the choice for you!

    GM 383 Base Engine for Throttle Body Trucks/ SUV's 1986 - 1995 - Cast Iron Heads - Flat Tappet Cam


    • HP & Torque: TBI - 315 HP / 415 FT LBS
    • Compression Ratio: 9.5:1
    • Cast Iron Heads
    • Hypereutectic Pistons
    • Flat Tappet Cam
    • Cast Steel Crank
    • Part #: BP38302CT


    • 4 bolt main block bored .040 over
    • Square and parallel decked
    • Align honed main bearing bore
    • Cylinders honed on computer controlled machine to within .0002 straightness and roundness
    • Cylinders are sonic tested for thickness

    Rotating Assembly

    • New cast steel crankshaft
    • Hypereutetic pistons
    • GM heavy beam rods with 150,000 psi bolts
    • Hastings Moly rings
    • Rotating assembly balanced to within 2 grams
    • Melling high volume oil pump
    • Flat tappet hydraulic lifter camshaft
    • Double roller timing chain

    Cylinder Heads

    • New cast iron heads
    • 1.25 diameter valve springs
    • Hardened retainers and springs
    • 2.02 swirl polished intake valves
    • 1.60 swirl polished exhaust valves
    • Hardened push rods
    • HP long slot rockers
    • 3 angle valve job

    Cam Specs

    • Cam Type: Flat Tappet
    • .480 Intake .480 Exhaust
    • 210 Intake / 220 Exhaust duration
    • @ .050 - 112 degree lobe separation

    Ignition Timing

    • Set at manufacturer specifications

    Also Includes

    • TBI dual plane
    • Custom programmed ECM specific for your application
    • Timing cover
    • Oil pan
    • Valve covers
    • Brass freeze plugs
    • Dyno tested “ and shipped with results


    • 30 month / 50,000 mile


    This engine requires a 400ci weighted harmonic balancer, and late 350ci weighted flexplate/flywheel.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.



    MFG. Part #BP38302CT
    BrandBluePrint Engines
    Crate Engine TypeLong Block
    Engine Displacement383 cu. in.
    Horsepower315 horsepower
    Compression Ratio9.5:1
    Torque415 ft./lbs.
    Camshaft TypeHydraulic Flat Tappet
    Cylinder Head MaterialCast Iron
    Piston MaterialHypereutectic Aluminum
    Crankshaft MaterialCast Steel
    Camshaft Duration (.050 in)209° intake / 216° exhaust
    Camshaft Lift (in).435 intake / .454 exhaust
    Bore x Stroke (in)4.000" bored .040" over x 3.750"
    Intake Manifold IncludedYes
    Distributor IncludedNo
    Warranty30 month / 50,000 miles
    Valve Covers IncludedYes
    Cylinder Heads IncludedYes
    Rear Main Seal Style1-piece
    Oil Pan IncludedYes
    Timing Cover IncludedYes
    Water Pump IncludedNo
    Harmonic Balancer IncludedNo
    Flexplate IncludedNo
    Flywheel IncludedNo
    Air Cleaner IncludedNo
    Spark Plugs IncludedNo
    Spark Plug Wires IncludedNo
    Camshaft IncludedYes
    BlockChevy 350CI, 4 bolt main, bored .040
    NotesChip included with engine purchase. BluePrint needs year, make, model, vehicle modifications, service number and prom code from customer. Zinc Additive Required For Flat Tappet Application, Recommended Oil For Your BluePrint Crate Engine: 10W30, Non-Synt