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 Marine Engine – Cast Iron Vortec Heads – Roller Cam Overview HP & Torque: 405 HP / 450 FT LBS Cast Iron Heads Roller Cam Cast Steel Crank Part #: MBP3830CTC Block Seasoned 4-bolt main Max .040 bore One piece rear main seal Sonic tested to assure wall thickness Align honed main bearing bore Rotating Assembly New cast steel premium crank Hypereutectic pistons New roller camshaft Cylinder Heads Cast Iron Vortec 1.25 dia. valve springs, hardened retainers and keepers 1.940 swirl polished intake valves 1.500 swirl polished exhaust valves Elgin hardened push rods Long slot rockers with positive lock adjusting nuts Cam Specs Cam Type: Roller .495 Intake .503 Exhaust 220 Intake / 224 Exhaust duration @ .050 – 112 degree lobe separation Also Includes New cast iron marine intake Fuel Pump Fuel line and filter Cast iron circulating pump 750cfm carburetor Harmonic balancer Distributor Spark plugs BluePrint plug wires Polished aluminum valve covers Rubber coated steel oil pan Brass freeze plugs Dyno test results shipped with engine Warranty 12 month unlimited hour on pleasurecraft only. No warranty on commercial use.
Specifications
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Crate Engine Type: Long Block
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Engine Displacement: 383 cu. in.
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Horsepower: 405 horsepower
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Compression Ratio: 9.5:1
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Torque: 450 ft./lbs.
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Camshaft Type: Hydraulic Roller Tappet
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Cylinder Head Material: Cast Iron
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Piston Material: Hypereutectic Aluminum
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Crankshaft Material: Cast Steel
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Camshaft Duration (.050 in): 220° intake / 224 ° exhaust
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Camshaft Lift (in): .528 intake / .536 exhaust
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Bore x Stroke (in): 4.040" x 3.750"
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Carburetor Included: No
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Intake Manifold Included: Yes
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Distributor Included: No
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Warranty: 12 month parts and labor, pleasurecraft only
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Valve Covers Included: Yes
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Assembled: Yes
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Engine Balance: Internal
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Cylinder Heads Included: Yes
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Rear Main Seal Style: 1-piece
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Throttle Body Included: Yes
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Oil Pan Included: Yes
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Timing Cover Included: Yes
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Water Pump Included: Yes
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Harmonic Balancer Included: Yes
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Flexplate Included: No
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Flywheel Included: No
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Air Cleaner Included: No
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Spark Plugs Included: Yes
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Spark Plug Wires Included: Yes
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Computer Included: No
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Wiring Harness Included: Yes
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Camshaft Included: Yes
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Cylinder Heads: Cast iron Vortec
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Block: 4 bolt main
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MFG. Part #: MBP3830CTC
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Notes: Recommended oil for your BluePrint Crate Engine: 10W30, Non-Synthetic, Not for EGR
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Brand: BluePrint Engines
Emissions Notice
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
