Product Summary

350, 383, Long Block Crate Engine Type

    Key Specs

    MFG. Part #BP3834CTC1
    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 Dressed Engine - Aluminum Heads - Flat Tappet Cam


    • HP & Torque: HP 420/ FT 450 LBS
    • Compression Ratio: 10.0:1
    • Aluminum Heads
    • Hypereutectic Pistons
    • Flat Tappet Cam
    • Cast Steel Crank
    • Part #: BP3834CTC1


    • 4 Bolt main, 1 piece rear main seal
    • Passenger side dipstick
    • 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
    • Hypereutectic pistons
    • Chevy heavy beam rods with 150,000 PSI bolts
    • Hastings moly rings
    • Melling high volume oil pump
    • Hydraulic flat tappet cam
    • Heavy duty double roller timing set

    Cylinder Heads

    • BluePrint Performance aluminium
    • Hardened retainers and springs
    • 2.02 swirl polished intake valves
    • 1.60 swirl polished exhaust valves
    • BP Aluminum Head Part# H8002K

    Cam Specs

    • Cam Type: Flat Tappet
    • .480 Intake .486 Exhaust
    • 229 Intake / 230 Exhaust duration
    • @ .050

    Ignition Timing

    • 34 degrees total at 3500 RPM

    Also Includes

    • New valve covers, oil pan and timing cover
    • Aluminum Intake Manifold
    • HEI distributor
    • 750cfm Carburetor
    • Brass freeze plugs
    • Dyno test results shipped with engine


    Picture shown with optional tall, perimeter bolt valve covers.



    CARB Warning

    Follow EPA, CARB, and state regulations for engine changes

    Emissions warning: this part is for vehicle engine changes, not direct oem engine replacements. In California, engine changes are legal when done in compliance with California bureau of automotive repairs (bar) engine change policy. For assistance, call bar referee at: (800) 622-7733. And see https://bar.Ca.Gov/consumer/smog_check_program/engine_changes. All customers must comply with federal epa mobile source enforcement memorandum no. 1a (and addendum) and all applicable state regulations when conducting engine changes. Improper installation and/or use of this part in California may subject the installer and/or owner to a $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and laws of all states for use of this engine change part on makes or models of vehicles that render them noncompliant with applicable state and/or federal emission laws with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine


    MFG. Part #BP3834CTC1
    BrandBluePrint Engines
    Crate Engine TypeLong Block
    Engine Displacement383 cu. in.
    Horsepower420 horsepower
    Compression Ratio10.0:1
    Torque450 ft./lbs.
    Camshaft TypeHydraulic Flat Tappet
    Cylinder Head MaterialAluminum
    Piston MaterialHypereutectic Aluminum
    Crankshaft MaterialCast Steel
    Camshaft Duration (.050 in)229° intake / 230° exhaust
    Camshaft Lift (in).480 intake / .486 exhaust
    Bore x Stroke (in)4.000" bored .040" over x 3.750"
    Intake Manifold IncludedYes
    Distributor IncludedYes
    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
    BlockHand picked, seasoned, square and parallel decked, 4 bolt main
    NotesZinc Additive Required For Flat Tappet Application, Recommended Oil For Your BluePrint Crate Engine: 10W30, Non-Synthetic. Not For EGR