Chrysler SB Compatible 408 c.i. Engine - 375 HP - Long Block
Chrysler SB Compatible 408 c.i. Engine - 375 HP - Long Block
Chrysler SB Compatible 408 c.i. Engine - 375 HP - Long Block
Chrysler SB Compatible 408 c.i. Engine - 375 HP - Long Block

Chrysler SB Compatible 408 c.i. Engine - 375 HP - Long Block

SKU: BPC4082CT

Chrysler SB Compatible 408 c.i. Engine - 375 HP - Long Block

SKU: BPC4082CT

HP & Torque: 375 HP / 460 FT. LBS

Cylinder Heads: Cast Iron - Magnum

Compression Ratio: 9.8:1

Camshaft: Flat Tappet - .474 Intake / .474 Exhaust Lift and 233 Intake / 240 Exhaust Duration @ .050 - 110° LSA

Pistons: Hypereutectic

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

Regular price $6,599.00
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 Description:

  • HP & Torque: HP 375 / 460 FT LBS
  • Compression Ratio: 9.8:1
  • Cast Iron Heads
  • Flat Tappet Cam
  • Steel Crank
  • Forged Pistons

Block:

  • Hand-picked seasoned 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
  • 4.000" Bored .040" over
  • 2-Piece Rear Main Seal
  • Mech fuel pump provision: Yes

Rotating Assembly:

  • New steel crankshaft
  • 4.000" Stroke
  • Forged Magnum 6.123" connecting rods w/ 150,000 psi bolts
  • Forged pistons
  • External

Cylinder Heads:

  • NEW Magnum cast iron heads
  • Hardened retainers and springs
  • 1.92" swirl polished intake valves
  • 1.625" swirl polished exhaust valves
  • Hardened push rods

Cam Specs:

  • Cam Type: Flat Tappet
  • .474 Intake .474 Exhaust
  • 233 Intake / 240 Exhaust duration
  • @ .050 - 110-degree lobe separation

Ignition Timing:

  • 34 degrees at 3500 RPM

Also Includes:

  • Valve covers, oil pan and timing cover

Notes:

  • This engine Features Magnum heads. Will require Magnum intake manifold such as BPP7577
  • Not for use in pollution-controlled vehicles
  • If installing with a Manual Transmission with .750" input shaft, Recommended Pilot bearing is PN FC-69907.
  • Recommended Pilot OD is 1.81"
     

    Engine Accessory Specifications

    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: BPC4082CTC

    Fuel Delivery Type: Carbureted, 750 cfm, manual choke

    Spark Plug: BPP7938 NGK 7938 BKR5E

    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)

    Stall Converter: 1800-2200 rpm

    Intake Manifold: Dual plane, satin aluminum

    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

    Recommended Break in Oil : BPP710 (Click Here)

    Recommended Service Oil : BPP10W30 (Click Here) 

    Recommended Oil Filter ; BPP51515 (Click Here)

    Total Oil capacity with production oil pan, and Correct BPP51515 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.

    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.

    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)!

    Customer Reviews

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