BluePrint Engines 383 ci Small Block GM style Marine Engine - Long Block MBP3830CT

• Horsepower & Torque: 405 Horsepower / 450 FT LBS
• Compression Ratio: 9.5:1
• Cast Iron Heads
• Hydraulic Roller Cam
• Cast Crank
• Hypereutectic Pistons

Block:

• BluePrint Engines High Strength Cast Iron 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" Bore
• 1-Piece Rear Main Seal
• Mech Fuel Pump Provision: Yes
• Passenger Side Dipstick Drilled and Tapped for Clutch Linkage

Rotating Assembly:

• Cast Crankshaft
• 3.750" Stroke
• OEM Type 5.700" Connecting Rods w/ 150,000 PSI Bolts
• Hypereutectic Pistons
• External Front/ External Rear Engine Balance

Cylinder Heads:

• Vortec Cast Iron Cylinder Heads
• 1.94 Intake Valves
• 1.50 Exhaust Valves
• Hardened Push Rods
• Long Slot Rockers with Positive Lock Adjusting Nuts

Cam Specs:

• Cam Type: Hydraulic Roller
• .495 Intake / .502 Exhaust Lift
• 220 Intake / 224 Exhaust Duration
• @.050-114 Degree Lobe Separation
• Using 1.5 Rockers

Also Includes:

• Marine Intake Manifold
• Valve Covers
• Oil Pan

Notes:

• This engine is designed for CARBURETED use only. It is NOT for use in any factory fuel injected applications.
• Replaces Standard Rotation engines only. Not available as reverse rotation.
• BluePrint Engines recommends the use of a flame arrestor in marine applications and advises checking local laws to ensure compliance with the United States Coast Guard Requirements for Ignition Protection & Fire Resistance.

Your BluePrint engine was dyno tested with the parts and specifications listed below. If you prefer to install a different part, your engine may not produce the horsepower recorded on your dyno sheet.

Part Number: MBP3830CT

Fuel Delivery Type: Carbureted, 750 cfm * Not Included

Spark Plug: Champion 13

Spark Plug Gap: .045"

Harmonic Balancer: Not included, BPP400L- 400 ci weighed, 8" diameter

Flexplate/Flywheel: Late 350 Weighted

Stall Converter: N/A

Intake Manifold: Marine, cast iron

Fuel Recommendation: 91 Octane

Timing (Initial/Total Advance): Initial timing - 10-16° and Total timing 32-34°

Firing Order: 1,8,4,3,6,5,7,2

Notes: Recommended break in oil for your BluePrint Crate Engine: BPP710, Not for EGR

Click here to download a copy of the Installation Guide that came with your BluePrint engine.

WARRANTY:
BETTER THAN THE REST.

The satisfaction of our customers is our highest priority at BluePrint Engines. We use quality components to balance your engine's rotating assembly within two grams of spec. We dyno test your crate engine and certify that it's ready to deliver horsepower and torque.

We give your BluePrint engine the industry's best-in-class warranty for 30-months / 50,000 miles — with the extra confidence only BluePrint can provide. Our warranty applies to individual or professional installations and is fully transferable.

For a detailed overview of our warranty, click here.

DYNO PROMISE:
IT ALL COMES DOWN TO RESULTS.

We make sure we hit our target horsepower and proper torque with every crate engine. We use an advanced computerized balancer to get our rotating assemblies within two grams, ensuring silky smooth power over the entire RPM range. That's precisely why our engines sound and run better than our competitors.

BRAGGING RIGHTS INCLUDED!

A comprehensive, dyno-generated printout showing these critical specs will accompany your delivered engine. No more guessing or wondering what your installed engine's real-world peak horsepower and torque ratings actually are. Any doubters in the crowd? Simply flash 'em your dyno results!