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#227MBP3550CT
BluePrint MBP3550CT GM 355 Base Marine Engine, Cast Iron Vortec Heads
#2 Base Dressed - Carbureted
$6,799.00
/each
Factory Shipped
Quantity
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Key Specs
| Crate Engine Type | Long Block |
| Compression Ratio | 9.5:1 |
| Engine Displacement | 355 cu. in. |
| Camshaft Type | Hydraulic Flat Tappet |
| Cylinder Head Material | Aluminum |
Need To Know
Made to Order
This custom item will ship when completed
Truck Shipment
Truck shipments must be pre-paid with a credit card, certified check or money order
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Return PolicyBluePrint Engines MBP3550CT Details
BluePrint Engines MBP3550CT Details
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: Flat tappet
- .480 Intake .489 Exhaust
- 226 Intake / 236 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.
Warranty Information
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Warranty Information
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Warranty Information (PDF)
BluePrint Engines MBP3550CT Specifications
BluePrint Engines MBP3550CT Specifications
| KEY SPECS | |
|---|---|
| MFG. Part # | MBP3550CT |
| Brand | BluePrint Engines |
| Crate Engine Type | Long Block |
| Compression Ratio | 9.5:1 |
| Engine Displacement | 355 cu. in. |
| Camshaft Type | Hydraulic Flat Tappet |
| Cylinder Head Material | Aluminum |
| Piston Material | Hypereutectic Aluminum |
| Crankshaft Material | Cast Steel |
| Carburetor Included | No |
| Intake Manifold Included | No |
| Distributor Included | No |
| Valve Covers Included | Yes |
| Engine Balance | External |
| Cylinder Heads Included | Yes |
| Rear Main Seal Style | 1-piece |
| Throttle Body Included | No |
| Timing Cover Included | Yes |
| Oil Pan Included | Yes |
| Water Pump Included | No |
| Harmonic Balancer Included | No |
| Flexplate Included | No |
| Flywheel Included | No |
| Air Cleaner Included | No |
| Spark Plugs Included | No |
| Spark Plug Wires Included | No |
| Computer Included | No |
| Wiring Harness Included | No |
| GENERAL | |
| Torque | 390 ft./lbs. |
| Horsepower | 365 horsepower |
| Camshaft Duration (.050 in) | 226° intake / 236° exhaust |
| Camshaft Lift (in) | .480 intake / .489 exhaust |
| Bore x Stroke (in) | 4.000" bored .040 over x 3.480" |
| Warranty | 12 month parts and labor, pleasurecraft only |
| Assembled | Yes |
| Camshaft Included | Yes |
| Cylinder Heads | Cast iron Vortec |
| Block | 4 bolt main |
| Notes | Zinc Additive Required For Flat Tappet Application, Recommended Oil For Your BluePrint Crate Engine: 10W30, Non-Synthetic. Not For EGR |
Ratings & Reviews
Ratings & Reviews
Questions & Answers
1 Question • 1 Answer
Questions & Answers
1 Question • 1 Answer
I have a 1984 350 mercruiser engine that has a cracked block. what block design is the 355 marine engine you are selling? Will it fit pre 86? The flywheel is smaller on per 86 merc engines. Thanks very much.
by Shane
• 7 years ago
1 answer
View Answer
1 of 1 questions shown
Fitment
Fitment
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1996 Chevy Express 2500
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1997 Chevy Express 2500
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1986-1995 Chevy G30
Gen 1 L05 Small Block Chevy
1996 Chevy G30
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1996 Chevy Impala
Gen 2 LT1 Small Block Chevy
Vortec L31 Small Block Chevy
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Gen 1 L05 Small Block Chevy
1986 Chevy K10 Suburban
Gen 1 L05 Small Block Chevy
1988-1995 Chevy K1500
Gen 1 L05 Small Block Chevy
1996-1999 Chevy K1500
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Vortec L31 Small Block Chevy
1992-1995 Chevy K1500 Suburban
Gen 1 L05 Small Block Chevy
1996-1999 Chevy K1500 Suburban
Gen 1 L05 Small Block Chevy
Vortec L31 Small Block Chevy
1986 Chevy K20
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1986 Chevy K20 Suburban
Gen 1 L05 Small Block Chevy
1988-1995 Chevy K2500
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1996-1999 Chevy K2500
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Vortec L31 Small Block Chevy
1992-1995 Chevy K2500 Suburban
Gen 1 L05 Small Block Chevy
1996-1999 Chevy K2500 Suburban
Gen 1 L05 Small Block Chevy
Vortec L31 Small Block Chevy
1986 Chevy K30
Gen 1 L05 Small Block Chevy
1988-1995 Chevy K3500
Gen 1 L05 Small Block Chevy
1996-1999 Chevy K3500
Gen 1 L05 Small Block Chevy
Vortec L31 Small Block Chevy
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Gen 1 L05 Small Block Chevy
1986-1995 Chevy P30
Gen 1 L05 Small Block Chevy
1996-1999 Chevy P30
Gen 1 L05 Small Block Chevy
Vortec L31 Small Block Chevy
1987 Chevy R10
Gen 1 L05 Small Block Chevy
1987-1988 Chevy R10 Suburban
Gen 1 L05 Small Block Chevy
1989-1991 Chevy R1500 Suburban
Gen 1 L05 Small Block Chevy
1987-1988 Chevy R20
Gen 1 L05 Small Block Chevy
1987-1988 Chevy R20 Suburban
Gen 1 L05 Small Block Chevy
1995 Chevy R25
Gen 1 L05 Small Block Chevy
1996-1999 Chevy R25
Gen 1 L05 Small Block Chevy
Vortec L31 Small Block Chevy
1989 Chevy R2500
Gen 1 L05 Small Block Chevy
1989-1991 Chevy R2500 Suburban
Gen 1 L05 Small Block Chevy
1987-1988 Chevy R30
Gen 1 L05 Small Block Chevy
1989-1991 Chevy R3500
Gen 1 L05 Small Block Chevy
1995 Chevy Silverado
Gen 1 L05 Small Block Chevy
1996-1999 Chevy Silverado
Gen 1 L05 Small Block Chevy
Vortec L31 Small Block Chevy
1987-1994 Chevy Suburban
Gen 1 L05 Small Block Chevy
1995 Chevy Suburban 1500
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1996-1999 Chevy Suburban 1500
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Vortec L31 Small Block Chevy
1995 Chevy Tahoe
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1996-1999 Chevy Tahoe
Gen 1 L05 Small Block Chevy
Vortec L31 Small Block Chevy
1987 Chevy V10
Gen 1 L05 Small Block Chevy
1987-1988 Chevy V10 Suburban
Gen 1 L05 Small Block Chevy
1989-1991 Chevy V1500 Suburban
Gen 1 L05 Small Block Chevy
1987 Chevy V20
Gen 1 L05 Small Block Chevy
1987-1988 Chevy V20 Suburban
Gen 1 L05 Small Block Chevy
1989-1991 Chevy V2500 Suburban
Gen 1 L05 Small Block Chevy
1987-1988 Chevy V30
Gen 1 L05 Small Block Chevy
1989-1991 Chevy V3500
Gen 1 L05 Small Block Chevy
1998-1999 GMC C1500
Vortec L31 Small Block Chevy
1992-1999 GMC C1500 Suburban
Vortec L31 Small Block Chevy
1987-1995 GMC G1500
Gen 1 L05 Small Block Chevy
1987-1995 GMC G2500
Gen 1 L05 Small Block Chevy
1987-1994 GMC G3500
Gen 1 L05 Small Block Chevy
1995-1996 GMC G3500
Gen 1 L05 Small Block Chevy
Gen 1 L98 Small Block Chevy
1986 GMC Jimmy
Gen 1 L05 Small Block Chevy
1987 GMC Jimmy
Gen 1 L05 Small Block Chevy
Gen 1 L98 Small Block Chevy
1988-1990 GMC Jimmy
Gen 1 L05 Small Block Chevy
1998-1999 GMC K1500
Vortec L31 Small Block Chevy
1981-1986 GMC K1500 Suburban
Gen 1 L05 Small Block Chevy
Gen 1 L98 Small Block Chevy
1992-1999 GMC K1500 Suburban
Vortec L31 Small Block Chevy
1986 GMC K2500
Gen 1 L05 Small Block Chevy
1996-2000 GMC K2500
Vortec L31 Small Block Chevy
1992-1993 GMC K2500 Suburban
Gen 1 L05 Small Block Chevy
1987 GMC R1500 Suburban
Vortec L31 Small Block Chevy
1988-1991 GMC R1500 Suburban
Gen 1 L98 Small Block Chevy
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1987-1991 GMC V1500 Suburban
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Gen 1 L98 Small Block Chevy
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Gen 1 L98 Small Block Chevy
1987-1991 GMC V2500 Suburban
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