Name: Chrysler Small Block Compatible 408 c.i. Engine - 465 Horsepower - Long Block
Brand: Blueprint Engines
SKU: BPC4085CT
Price: 8899.0 USD
Availability: InStock

Chrysler Small Block Compatible 408 c.i. Engine - 465 Horsepower - Long Block

Horsepower & Torque: 465 Horsepower / 494 FT. LBS. Torque

Cylinder Heads: BluePrint Engines Assembled, Edelbrock Aluminum Cylinder Heads

Compression Ratio: 10:1

Camshaft: Hydraulic Roller - .544 Intake / .541 Exhaust Lift and 236 Intake / 242 Exhaust Duration @ .050 - 110° LSA

Pistons: Forged

Crankshaft: Cast Crank - 4.000" Stroke and Forged 6.123" Rods

Fuel Recommendation: 91+ Octane

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Overview:

This BluePrint Engines powerplant delivers a strong 465 horsepower and 494 ft-lbs. of torque with a street-friendly 10:1 compression ratio, making it an excellent choice for hot rods, muscle cars, and street/strip builds. It’s equipped with lightweight aluminum heads for improved airflow and cooling, a performance roller cam for enhanced lift and durability, and a cast crankshaft paired with forged pistons to provide a solid foundation for dependable power. Finished with valve covers, an oil pan, and a timing cover, this engine is a well-rounded, ready-to-run package built for reliable performance and classic V8 sound.

Description:

Horsepower & Torque: 465 Horsepower / 494 FT. LBS. Torque
Compression Ratio: 10:1
Aluminum Heads
Roller Cam
Cast Crankshaft
Forged Pistons

Block:

Hand-Picked Seasoned Magnum 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
2-Bolt Main
4.040" Bore
2-Piece Rear Main Seal
Mech Fuel Pump Provision: Yes

Rotating Assembly:

Cast Crankshaft
4.000" Stroke
Forged Magnum 6.123" Connecting Rods w/ 150,000 PSI Bolts
Forged Pistons
Externally Balanced Front and Rear

Cylinder Heads:

BluePrint Engines Assembled and Machined Edelbrock 61769 Casting
Aluminum Magnum Pattern Cylinder Heads
58cc Chamber
Aluminum Roller Rockers
2.02" Intake / 1.60" Exhaust Valves
176cc Intake / 75cc Exhaust Runner

Cam Specs:

Cam Type: Roller
.544 Intake / .541 Exhaust Lift
236 Intake / 242 Exhaust Duration
@.050-110 Degree Lobe Separation

Ignition Timing:

34 Degrees Total at 4000 RPM

Also Includes:

Valve Covers
Oil Pan
Timing Cover

Notes:

Not for use in pollution-controlled vehicles.
Required Magnum Pattern intake manifold. Tested with BPP7577
If installing with a Manual Transmission with .750" input shaft, Recommended Pilot bearing is PN FC-69907.
Recommended Pilot OD is 1.81"

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: BPC4085CT

Fuel Delivery Type: Carbureted, 750cfm, manual choke

Spark Plug: BPP7938 NGK 7938 BKR5E (.750 inch reach, 14mm thread, 5/8 hex, plug)

Spark Plug Gap: .035"

Harmonic Balancer: Magnum Weighted balancer such as BPP360. EXTERNALLY BALANCED '1993-'1997, 7.25" Diameter.

Flexplate/Flywheel: LA 360, (Pre-Magnum) such as BPP727360 if paired with 727 transmission.

Stall Converter: 2200 - 2600 rpm

Intake Manifold: Dual plane, satin aluminum

Fuel Recommendation: 91+ Octane Approved

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

Firing Order: 1,8,4,3,6,5,7,2

Recommended Break in Oil: BPP710 (Click Here)

Recommended Service Oil: BPP10W30 (Click Here)

Recommended Oil Filter: BPP21085 or BPP51515 (Click Here)

Total Oil capacity with production oil pan, and Correct Filter: 5 Quarts

Header Partners:
Click here for our Header Partners and recommendations.

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

BETTER THAN THE REST.

At BluePrint Engines, customer satisfaction is our highest priority. Every engine is built using high-quality components, with each rotating assembly balanced to within two grams of specification. Before shipment, every crate engine is dyno tested and certified to ensure it is ready to deliver the horsepower and torque you expect.

To stand behind that level of quality, BluePrint Engines offers industry-leading warranty coverage, providing confidence and peace of mind whether the engine is installed by an individual or a professional installer. Our standard warranty is fully transferable, adding long-term value and reassurance for our customers.

Warranty Coverage Details:

BluePrint Engines (including Builder Series)- Standard Warranty 30 months or 50,000 miles (parts and labor)*
BluePrint Engines Extended Warranty- 48 months or unlimited miles (parts and labor)*
Race / Motorsports Engines -No warranty
Marine Engines- 12 months (parts and labor)
Short Blocks-12 months (parts only)
Bare Blocks- 6-Month Unaltered
International Sales- Warranty coverage is handled by the in-country distributor

*Applies to eligible engine part numbers beginning with “B” or “P.” Warranty coverage is subject to terms and conditions. Proper installation and maintenance are required.

Please refer to full warranty documentation for complete details click here.

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!

This engine will be dyno tested before it ships to you at no additional charge (others charge $500)!

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