BluePrint MBP3830CTC GM 383 Base Marine Engine, Cast Iron Vortec Heads
BluePrint MBP3830CTC GM 383 Base Marine Engine, Cast Iron Vortec Heads is a engine assembly listing intended for buyers seeking a specific replacement, restoration, or performance application. Review the model and configuration details carefully before ordering to ensure the correct match for your vehicle or build.
Product Highlights
- 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. SpecificationsCrate Engine Type: Long BlockEngine Displacement: 383 cu. in.Horsepower: 405 horsepowerCompression Ratio: 9.5:1Torque: 450 ft./lbs.Camshaft Type: Hydraulic Roller TappetCylinder Head Material: Cast IronPiston Material: Hypereutectic AluminumCrankshaft Material: Cast SteelCamshaft Duration (.050 in): 220° intake / 224 ° exhaustCamshaft Lift (in): .528 intake / .536 exhaustBore x Stroke (in): 4.040" x 3.750"Carburetor Included: NoIntake Manifold Included: YesDistributor Included: NoWarranty: 12 month parts and labor, pleasurecraft onlyValve Covers Included: YesAssembled: YesEngine Balance: InternalCylinder Heads Included: YesRear Main Seal Style: 1-pieceThrottle Body Included: YesOil Pan Included: YesTiming Cover Included: YesWater Pump Included: YesHarmonic Balancer Included: YesFlexplate Included: NoFlywheel Included: NoAir Cleaner Included: NoSpark Plugs Included: YesSpark Plug Wires Included: YesComputer Included: NoWiring Harness Included: YesCamshaft Included: YesCylinder Heads: Cast iron VortecBlock: 4 bolt mainMFG. Part #: MBP3830CTCNotes: Recommended oil for your BluePrint Crate Engine: 10W30, Non-Synthetic, Not for EGRBrand: BluePrint Engines Emissions NoticeEmissions 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
Technical Specifications
| Product name | BluePrint MBP3830CTC GM 383 Base Marine Engine, Cast Iron Vortec Heads |
|---|---|
| Store SKU | 646594a321a8 |
Compatibility & Fitment
Engine compatibility depends on vehicle year, engine family, mounts, accessories, sensors, fuel delivery and emissions equipment. Verify the exact assembly configuration and required supporting parts before purchase.
What’s Included
Package contents depend on the exact manufacturer part number and whether the listing is a complete assembly, long block, short block, bare block, or transmission package. Only components explicitly stated in the product specifications or confirmed by the seller should be considered included.
Installation & Care
Follow the manufacturer’s installation, fluid, break-in, and maintenance instructions. Inspect all mating components and connections before first operation. Use the fluids and consumables specified for the exact application.
Warranty Information
Warranty coverage, duration, exclusions and any core-return requirements must be confirmed for this exact product before purchase. A 3-year store warranty should be advertised only if it is actually offered for this SKU under published store terms; manufacturer warranty may differ.
Important Product Information
Photos may show optional or illustrative components. Fitment, stock status, shipping requirements and installation accessories should be confirmed before ordering. Professional installation is recommended where applicable.

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