Callies BBP42B-MG Big Block Chevy, Magnum, Forged Crankshaft, 4.25 in. Stroke, Internal, 2-Piece

Callies BBP42B-MG Big Block Chevy, Magnum, Forged Crankshaft, 4.25 in. Stroke, Internal, 2-Piece

$3,113.00
MSRP: $3,217.00
(You save $104.00 )
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SKU:
CALBBP42BMG
MPN:
BBP-42B-MG
Condition:
New
Weight:
70.55 LBS
Shipping:
Calculated at Checkout

Applies To Continental U.S. orders only

Out of stock

Magnum - Big Block Chevy Standard Features

  • Stroke Range of 3.500 in. to 5.500 in.
  • 2.200 - 2.100 - 2.000 Rod Journal Diameters
  • Standard BBC or 409 Main Bearing Diameters
  • Multiple Post Key-way and Bolt Hole Configurations
  • Enhanced rod oiling through the use of main bearing oil hole lead-ins.
  • One and Two Piece Seal Type Flanges or Star Flange
  • Gun Drilled Mains, With 8 Full Counterweights
  • All Rod Journals Lightened

Features
  • High purity premium 4340 forging
  • All rod journals are drilled with generously radiused lightening holes
  • Counterweights have been placed to reduce imbalance forces over the entire shaft
  • Each counterweight features Callies (Dual Arc) windage redcing edge
  • Perma Case Deep Nitride
    • Rear Main Seal Style:
    2-piece
    Engine Stroke (in.):
    4.250 in.
    Crankshaft Material:
    Forged 4340 steel
    Engine Balance:
    Internal
    Lightened:
    Yes
    Requires Narrow Bearings:
    Yes
    Rod Bearings Included:
    No
    Main Bearings Included:
    No
    Rod Journal Diameter (in.):
    2.200 in.
    Main Journal Diameter (in.):
    2.750 in.
    Balancer Bolt Thread Size:
    1/2-20 in.
    Crankshaft Snout Style:
    Standard
    Quantity:
    Sold individually.
    Make:
    Chevrolet
    Engine Family:
    Chevy big block Mark IV
    Engine Sizes:
    7.4L/454
    Years:
    1970-1990
    Crankshaft to Flywheel Attachment:
    6-bolt

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