SKU: BPC4085CT
BluePrint Engines Chrysler Small Block Compatible 408 C.I. Long Block
$8,599.00
408 c.i. 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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Financing available at checkout with Affirm

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
  • Magnum Aluminum Heads
  • BluePrint Engines Roller Cam
  • BluePrint Engines Cast Crankshaft
  • BluePrint Engines 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:

  • BluePrint Dipstick - BPP9224
  • Tall Valve Covers
  • Oil Pan and Pump
  • 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"

WARNING: Cancer and Reproductive Harm
Bragging Rights Included.

EVERY 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.

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