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Blueprint Engines BP4960 - Blueprint Engines Cast Iron Crankshaft Short Block Assemblies



Blueprint Engines BP4960 - Blueprint Engines Cast Iron Crankshaft Short Block Assemblies
Blueprint Engines BP4960 - Blueprint Engines Cast Iron Crankshaft Short Block Assemblies

JEGS Part Number: 138-BP4960

Forged Short Block Assembly
  • 496ci BB-Chevy
  • 4-Bolt Main
  • Forged Flat Top Pistons
      $3,695.00 Order Today Ships 05/10/16
    $159

    Blueprint Engines BP4960 Details

    Big Block Chevy

    Block

    • 4 Bolt Main .060 over block, two piece rear seal, drivers side dipstick
    • 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

    Rotating Assembly

    • New SCAT cast steel crankshaft internally balanced
    • New SCAT 4340 forged connecting rods
    • 150,000 psi rod bolts
    • Forged Flat Top Pistons
    • Hastings moly rings
    • Rotating assembly balanced to within 2 grams
    • These engines require neutral balance balancers and flywheels

    Blueprint Engines Cast Iron Crankshaft Short Block Assemblies

    Blueprint Engines Short Block Assemblies are a great basis for a drivable and reliable high performance engine. All rotating assemblies are balanced within 2 grams on a computerized balancer.

    Features:
  • Cast Iron Crankshaft
  • Cylinder wall thickness ''sonic tested''
  • Cylinders bore angle corrected to be 90° perpendicular to crank centerline
  • Cylinder bore centerline corrected to be exactly centered over crank centerline
  • Decks machined parallel to crank centerline
  • Right and left side decks machined equal distance from crank centerline
  • Main bearing bores align honed to correct size and straightness
  • Cylinders computer honed to tolerance of 200 millionths of an inch
  • Cylinders plateau finished for virtually instant break-in
  • Screw-in oil galley plugs installed in place of soft plugs

  • Blueprint Engines BP4960

    Flywheel Included
    No
    Engine Balance
    Internal
    Rear Main Seal Style
    2-Piece
    Assembled
    Yes
    Connecting Rod Beam Style
    I-beam
    Connecting Rod Material
    Forged 4340 steel
    Crankshaft Material
    Cast steel
    Deck Height (in.)
    9.8
    Engine Block Material
    Cast iron
    Flexplate Included
    No
    Harmonic Balancer Included
    No
    Main Bolt Style
    4-bolt
    Main Journal Type
    454 mains
    Oil Pan Included
    No
    Piston Material
    Forged aluminum
    Quantity
    Sold individually
    Short Block Piston Style
    Flat top
    Timing Cover Included
    No
    Manufacturer's Part Number:
    BP4960
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