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$4,250.99
BluePrint MBP3550CT GM 355 Base Marine Engine, Cast Iron Vortec Heads
BluePrint MBP3550CT GM 355 Base Marine Engine, Cast Iron Vortec Heads

BluePrint MBP3550CT GM 355 Base Marine Engine, Cast Iron Vortec Heads

Universal Fit, 355 cu. in. Engine Displacement, Long Block Crate Engine Type

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BluePrint MBP3550CT GM 355 Base Marine Engine, Cast Iron Vortec Heads
BluePrint MBP3550CT GM 355 Base Marine Engine, Cast Iron Vortec Heads
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We estimate this item will ship on or before January 7th.
Part # 227MBP3550CT
$4,250.99
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Important Messages:

  • This item ships directly from the manufacturer. It may take an additional 30 business days for BluePrint Engines to ship this item.
  • This item ships via Ground Shipping only. Expedited and Air shipping options are not available.

Details

Horsepower:
365 horsepower
Torque:
390 ft./lbs.
Engine Displacement:
355 cu. in.
Crate Engine Type:
Long Block
Compression Ratio:
9.5:1
Camshaft Type:
Hydraulic Flat Tappet
Cylinder Head Material:
Cast Iron
Piston Material:
Hypereutectic Aluminum
Crankshaft Material:
Cast Steel
Camshaft Duration (@.050 in):
226° intake / 236° exhaust
Intake Manifold Included:
Yes
Distributor Included:
No
MFG. Part #:
MBP3550CT
Warranty:
12 month parts and labor, pleasurecraft only
Valve Covers Included:
Yes
Assembled:
Yes
Cylinder Heads Included:
Yes
Rear Main Seal Style:
1-piece
Oil Pan Included:
Yes
Timing Cover Included:
Yes
Water Pump Included:
No
Harmonic Balancer Included:
No
Flexplate Included:
No
Flywheel Included:
No
Air Cleaner Included:
No
Spark Plug Wires Included:
No
Camshaft Included:
Yes
Camshaft Lift (in):
.480 intake / .489 exhaust
Cylinder Heads:
Cast iron Vortec
Bore x Stroke (in):
4.000" bored .040 over x 3.480"
Block:
Seasoned 4-bolt main

Info

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 355 Base Marine Engine - Cast Iron Vortec Heads - Flat Tappet Cam

Overview

  • HP & Torque: 365 HP / 390 FT LBS
  • Compression Ratio: 9.5:1
  • Cast Iron Heads
  • Hypereutectic Pistons
  • Flat Tappet Cam
  • Cast Steel Crank
  • Part #: MBP3550CT

Block

  • Seasoned 4 bolt main block
  • One piece rear main seal
  • Max bore .040
  • Align honed main bearing bore
  • Sonic tested to assure wall thickness

Rotating Assembly

  • New cast steel crankshaft-externally balanced
  • Chevy heavy beam rods resized and clearance improved
  • 150,000 PSI rod bolts
  • Keith Black Hypereutectic pistons
  • Hastings moly rings
  • New Hydraulic flat tappet camshaft
  • Heavy duty double roller timing

Cylinder Heads

  • GM Vortec cast iron cylinder heads
  • 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 Specs

  • Cam Type: Roller
  • .480 Intake .489 Exhaust
  • 218 Intake / 224 Exhaust duration
  • @ .050 - 112 degree lobe separation

Ignition Timing

  • 34 degrees at 3500 rpm

Also Includes

  • New cast iron marine intake
  • Polished aluminum valve covers
  • Rubber coated steel oil pan
  • Brass freeze plugs
  • All engines are dyno tested on a state of the art DTS dyno and ship with a complete spec sheet

Warranty

  • 12 month unlimited hour on pleasurecraft only. No warranty on commercial use.

Warranties

Warranty Information (PDF)

Notes

Zinc Additive Required For Flat Tappet Application, Recommended Oil For Your BluePrint Crate Engine: 10W30, Non-Synthetic. Not For EGR
Some parts are not legal for use in California or other states with similar laws/regulations

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