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What Basic Information Should I Know About the Discontinued BluePrint BPC4080CTC 408 Stroker Mopar Engine?

 What Is the BPC4080CTC? The BPC4080CTC is a:
  • 408 cubic inch stroker small block Mopar
  • Based on a 360 Magnum block
  • Equipped with Magnum iron cylinder heads
  • Uses a hydraulic flat tappet camshaft
  • Features a carbureted fuel system
  • Uses a traditional distributor ignition system
  • Designed primarily for street performance applications
What Are the Major Engine Specifications?

Short Block

  • Displacement: 408 cubic inches
  • Stroker crankshaft: 4.000-inch stroke
  • Bore size: 4.040 inches
  • Hyperutectic pistons
  • Magnum connecting rods with ARP rod bolts
  • Externally balanced rotating assembly

Cylinder Heads

  • Magnum iron heads
  • Casting numbers typically:
    • 671
    • 302 Magnum
  • Valve sizes:
    • 1.92" intake
    • 1.625" exhaust

Camshaft

  • Hydraulic flat tappet design
  • Mopar Performance P4452992 grind or equivalent
  • Cam degree specification:
    • 106° intake centerline
What Ignition Components Were Used? The original bill of material specifies:

Distributor

MSD 8388

Ignition Coil

MSD 8202

Spark Plug Wires

  • Moroso 28232
  • PTW2014 equivalent

Spark Plugs

Champion 792 What Intake and Carburetor Were Used?

Intake Manifold

Edelbrock Performer RPM Air-Gap 7577

Carburetor

Depending on production period:
  • Holley 3310S
  • Edelbrock 1407

Fuel Pump

Holley 12-360-11 Mechanical Fuel Pump Is the Engine Internally or Externally Balanced? The BPC4080CTC is externally balanced. The build specification requires:
  • External balance at the front
  • External balance at the rear
  • 360-style Magnum balance configuration
When replacing components such as the harmonic balancer or flexplate/flywheel, balance compatibility must be maintained. What Water Pump Does It Use? The original specification calls for: PRW 1431800 Always verify pulley alignment and rotation direction when replacing the water pump. Does It Use Hydraulic Roller Lifters? No. The BPC4080CTC uses:
  • Hydraulic flat tappet lifters
  • Melling L2011 lifters
Because this engine utilizes a flat tappet camshaft, proper break-in procedures and appropriate oil additives are important for camshaft longevity. Common Owner Questions

Why does my engine require break-in oil?

The hydraulic flat tappet camshaft requires proper lubrication during initial startup to prevent premature cam and lifter wear.

Can I convert it to EFI?

Many owners have converted 408 Mopar engines to EFI. However, fuel system, intake manifold, and ignition system requirements vary by EFI manufacturer.

What spark plugs should I use?

The original specification calls for Champion 792 spark plugs.

Does it use Magnum heads?

Yes. The engine was built with Magnum iron cylinder heads featuring 1.92"/1.625" valves.

Is it a roller cam engine?

No. The BPC4080CTC uses a hydraulic flat tappet camshaft.

What intake manifold came with the engine?

Edelbrock Performer RPM Air-Gap 7577.

Is the engine externally balanced?

Yes. Front and rear external balance components are required.