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Horsepower & Torque: 670 Horsepower / 660 ft. lbs. Torque
Cylinder Heads: BluePrint Engines Aluminum Cylinder Heads
Compression Ratio: 10:1
Camshaft: Hydraulic Roller Cam - .647 Intake /.647 Exhaust Lift and 248 Intake / 254 Exhaust Duration @ .050 - 112° LSA
Pistons: Forged
Crankshaft: Forged Steel Crank - 4.250" Stroke and 6.385" Rods
Fuel Recommendation: 91+ Octane
- Description
- Engine Specs
- Parts & Accessories
- Warranty
Overview:
Description:
- Horsepower & Torque: 670 Horsepower / 660 ft. lbs. Torque
- Compression Ratio: 10.0:1
- BluePrint Engines Aluminum Heads
- BluePrint Engines Hydraulic Roller Cam
- BluePrint Engines Forged Crank
- BluePrint Engines Forged Pistons
Block:
- BluePrint Engines High Strength Cast Iron Block
- Manufactured and Machined in the USA!
- 4-Bolt Main
- 4.500"
- 1-Piece Rear Main Seal
- Mech Fuel Pump Provision: Yes
- Standard Deck
Rotating Assembly:
- New BluePrint Forged Crankshaft
- 4.250" Stroke
- Forged H-beam 6.385" Connecting Rods
- Forged Pistons
- Internal Engine Balance
Cylinder Heads:
- BluePrint Aluminum Cylinder Heads - PS8013
- Cylinder Heads Feature a .300 in. Raised Exhaust Port vs an OEM Casting
- 119cc Chamber
- 2.30" Intake / 1.88" Exhaust Valves
- 316cc Intake / 124cc Exhaust Runners
Cam Specs:
- Hydraulic Roller
- .647 Intake / .647 Exhaust Lift
- 248 Intake / 254 Exhaust Duration
- @.050-112 Degree Lobe Separation
Also Includes:
- 850cfm Carburetor
- Edelbrock Aluminum Intake Manifold
- Distributor
- Valve Covers
- Oil Pan
- Timing Cover
- Spark Plugs
- MSD Spark Plug Wires
- Harmonic Balancer
Notes:
- For boats being used in salt water, BluePrint Engines recommends a closed cooling system be used as the aluminum cylinder heads and intake manifolds do not have brass lined water passages.
- 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.
Blocks
- BluePrint Engines High Strength Cast Iron Block
- Manufactured and Machined in the USA!
- 4-Bolt Main
- 4.500"
- 1-Piece Rear Main Seal
- Mech Fuel Pump Provision: Yes
- Standard Deck
Cylinder Heads
- BluePrint Aluminum Cylinder Heads - PS8013
- Cylinder Heads Feature a .300 in. Raised Exhaust Port vs an OEM Casting
- 119cc Chamber
- 2.30" Intake / 1.88" Exhaust Valves
- 316cc Intake / 124cc Exhaust Runners
Ignition Timing
Initial Timing 10-16 - Total Timing 32-34
Spark Plug
.035 in.
Firing Order
1,8,4,3,6,5,7,2
Rotating Assembly
- New BluePrint Forged Crankshaft
- 4.250" Stroke
- Forged H-beam 6.385" Connecting Rods
- Forged Pistons
- Internal Engine Balance
Cam Specs
- Hydraulic Roller
- .647 Intake / .647 Exhaust Lift
- 248 Intake / 254 Exhaust Duration
- @.050-112 Degree Lobe Separation
Stall Converter
N/A
Also Includes
- 850cfm Carburetor
- Edelbrock Aluminum Intake Manifold
- Distributor
- Valve Covers
- Oil Pan
- Timing Cover
- Spark Plugs
- MSD Spark Plug Wires
- Harmonic Balancer
Notes
- For boats being used in salt water, BluePrint Engines recommends a closed cooling system be used as the aluminum cylinder heads and intake manifolds do not have brass lined water passages.
- 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.
Parts & Accessories Specs
| Intake Manifold | Single Plane, Satin Aluminum |
|---|---|
| Spark Plug | BPP7938 - NGK 7938 BKR5E |
| Harmonic Balancer | BPP454I |
| Flexplate/Flywheel (Not Included) | Non-Weighted |
| Fuel Recommendation | 91+ Octane |
| Recommended Service Oil | BPP10W30 |
| Recommended Oil Filter | BPP51061 |
| Total Oil Capacity with Production Oil Pan, and Correct Filter | 8 Quarts |
Header Partners:
- Click Here for our Header Partners and recommendations.
Better Than the Rest.
The satisfaction of our customers is our highest priority at BluePrint Engines. Every engine we build is assembled with premium components, balanced to within two grams, and dyno-tested to verify real horsepower and torque before it leaves our facility.
All BluePrint products include warranty protection designed specifically for how they're used. Our complete crate engines carry our industry-leading 30-month / 50,000-mile warranty, offering the confidence and peace of mind serious builders expect. Other BluePrint products—including bare blocks, marine engines, transmissions, race applications, and cylinder heads—feature warranty coverage tailored to their intended use and operating conditions.
For full terms and specific coverage by product category, download our warranty guide below. It contains complete details, limitations, and instructions for warranty registration and claims.
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Protect your investment by registering your warranty today. Register below to ensure coverage and stay up to date on important service information.
Register NowEVERY BLUEPRINT ENGINE ACES THE DYNO TEST
We make sure we hit our target horsepower and proper torque with every crate engine. We use an advanced computerized balancer in our in-house dyno testing rooms 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.
All specs, zero speculation: A comprehensive, dyno-generated printout showing your critical engine specs will accompany your delivered engine — every time. 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 exact engine’s dyno results.