$$929.51Engine \ Crankshafts \ 4340 Forged CrankshaftsBBP425-CS
CALBBP425-CS
Callies BBP425-CS Compstar Crankshaft Big Block Chevy
Drawing from the deep history of experience at Callies, our Compstar engineers have been able to combine the best characteristics of performance crankshaft design into the Compstar “Compweight” for Big Block Chevy applications Produced from 4340 material that is triple heat treated and stress relieved during machining. Compstar BBC Compweights ...
CalliesSAF113-CM Compstar Crankshaft Big Block Chevy

Callies

Callies BBP425-CS Compstar Crankshaft Big Block Chevy

Item #: CALBBP425-CS

Mfg Part #: BBP425-CS

Applies To Continental U.S. orders only

Specifications
Crankshaft Specifications
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.
Applications
Make
Chevrolet
Engine Family
Chevy big block Mark IV
Engine Size
7.4L/454
Years
1970-1990
Crankshaft to Flywheel Attachment
6-bolt
General
Brand
Callies
Item #
CALBBP425-CS
Mfg Part #
BBP425-CS
Description

Drawing from the deep history of experience at Callies, our Compstar engineers have been able to combine the best characteristics of performance crankshaft design into the Compstar “Compweight” for Big Block Chevy applications Produced from 4340 material that is triple heat treated and stress relieved during machining. Compstar BBC Compweights will remain true during severe duty use.

All Compstar Compweights are center counterweighted for reduced bearing loads during high RPM use. Machined with .125 journal radii and conventional straight shot oiling, these cranks offer simple durability. With all 4 rod journals drilled, Compstar BBC Compweight cranks weigh in at 75lbs or less. Compweights are fully deep case nitrided.

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