Chrysler Small Block Compatible 408 c.i. Engine - 375 Horsepower - Base Dressed - Carbureted
Chrysler Small Block Compatible 408 c.i. Engine - 375 Horsepower - Base Dressed - Carbureted
Chrysler Small Block Compatible 408 c.i. Engine - 375 Horsepower - Base Dressed - Carbureted
Chrysler Small Block Compatible 408 c.i. Engine - 375 Horsepower - Base Dressed - Carbureted
Chrysler Small Block Compatible 408 c.i. Engine - 375 Horsepower - Base Dressed - Carbureted
Chrysler Small Block Compatible 408 c.i. Engine - 375 Horsepower - Base Dressed - Carbureted

Chrysler Small Block Compatible 408 c.i. Engine - 375 Horsepower - Base Dressed - Carbureted

SKU: BPC4082CTC

Chrysler Small Block Compatible 408 c.i. Engine - 375 Horsepower - Base Dressed - Carbureted

SKU: BPC4082CTC

Horsepower & Torque: 375 Horsepower / 460 FT. LBS. Torque

Cylinder Heads: Cast Iron - Magnum

Compression Ratio: 9.8:1

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

Pistons: Forged

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

Fuel Recommendation: 91+ Octane

Regular price $8,399.00
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Overview:

This classic small-block engine package delivers 375 horsepower and 460 ft-lbs. of torque with a pump-gas-friendly 9.8:1 compression ratio, making it an ideal choice for street rods, muscle cars, and vintage builds. It features Magnum cast iron heads, a traditional flat tappet cam, a cast crankshaft, and durable forged pistons for a reliable and responsive powerband. Fuel delivery is handled by a proven Holley Classic 750cfm vacuum secondary carburetor with manual choke, mounted on a high-flow intake manifold for strong midrange performance. The package includes a dipstick, valve covers, oil pan, and timing cover, offering a complete, ready-to-run engine setup with a perfect blend of old-school performance and dependable street manners.

Description:

  • Horsepower & Torque: 375 Horsepower / 460 FT. LBS. Torque
  • Compression Ratio: 9.8:1
  • Cast Iron Heads
  • Flat Tappet 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:

  • 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:

  • Flat Tappet
  • .474 Intake / .474 Exhaust Lift
  • 233 Intake / 240 Exhaust Duration
  • @.050-110 Degree Lobe Separation

Ignition Timing:

  • 34 Degrees Total at 3500 RPM

Also Includes:

  • Holley Classic 750cfm Vacuum Secondary Carburetor w/ Manual Choke
  • Intake Manifold
  • Dipstick
  • Valve Covers
  • Oil Pan
  • Timing Cover

Notes:

  • 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: BPC4082CTC

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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