BluePrint Engines 383CI Stroker Marine Crate Engine | Small Block GM Style | Dressed Longblock with Carburetor | Iron Heads | Roller Cam


  • HP & Torque: 405 HP / 450 FT LBS
  • Compression Ratio: 9.5:1
  • Cast Iron Heads
  • Hydraulic Roller Cam
  • Cast Steel Crank
  • Hypereutectic Pistons
Due to world events we are working with our manufacturers every day to ship and receive parts. If the part you are looking for is time sensitive please give our team a call at 855-806-1147 before ordering to ensure it's availability.

Shipping is free, but there is a delivery fee for residential addresses.

SKU: BPEMBP3830CTC Category:

This BluePrint Engines 383 stroker marine crate engine is a great option for your marine application.


*Replaces Standard Rotation engines only.  Not available as reverse rotation.


  • Hand picked seasoned block
  • 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
  • 4-Bolt Main
  • 4.000″ Bored .040″ over
  • 1-Piece Rear Main Seal
  • Mech fuel pump provision: Yes
  • Passenger Side Dipstick Drilled and tapped for clutch linkage
  • New Cast steel crankshaft
  • 3.750″ Stroke
  • OEM type 5.700″ connecting rods w/ 150,000 psi bolts
  • Hypereutectic pistons
  • External Front/ External Rear
  • Cast Iron Vortec
  • 1.25 dia. valve springs, hardened retainers and keepers
  • 2.02 swirl polished intake valves
  • 1.60 swirl polished exhaust valves
  • Elgin hardened push rods
  • Long slot rockers with positive lock adjusting nuts
  • Cam Type: Roller
  • .495 Intake .502 Exhaust
  • 221 Intake / 226 Exhaust duration
  • @ .050 – 110 ° lobe separation
  • Marine intake manifold
  • valve covers
  • Carburetor
  • Distributor
  • Oil pan
  • Brass freeze plug
  • Dyno test results shipped with engine
  • 12 month unlimited hour on pleasurecraft only. No warranty on commercial use.
Prop65WARNING: These auto parts can expose you to chemicals including phthalates and lead. Installing or using these parts can expose you to other parts containing these chemicals and to engine exhaust, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to