Callies BBO42B-MG Big Block Chevy, Magnum, Forged Crankshaft, 4 in. Stroke, Internal, 2-Piece

Callies BBO42B-MG Big Block Chevy, Magnum, Forged Crankshaft, 4 in. Stroke, Internal, 2-Piece

Callies

$3,392.89
MSRP: $3,453.19
(You save $60.30 )
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SKU:
CALBBO42BMG
MPN:
BBO-42B-MG
Condition:
New
Weight:
71.85 LBS
Shipping:
Calculated at Checkout

Applies To Continental U.S. orders only

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Callies Magnum Crankshafts


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.):
    4.000 in.
    Material:
    Forged 4340 steel
    Engine Balance:
    Internal
    Lightened:
    Yes
    Requires Narrow Bearings:
    Yes
    Rod Journal Diameter (in.):
    2.200 in.
    Main Journal Diameter (in.):
    2.750 in.
    Rod Length:
    6.385 in.
    Crankshaft Snout Style:
    Standard
    Balancer Bolt Thread Size:
    1/2-20 in.
    Weight:
    N/A
    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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