D333M81-CS Compstar 4340 Crankshaft Durastar/Duramax 3.898 Stroke

Durastar, 3.898 Stroke, 3.146 Main, 2.477 Rod Journal, External Balance

$1,401.00

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⚠ PROP 65 WARNING

⚠ WARNING: This product can expose you to chemicals, which are known to the State of California to cause cancer. Please contact us to obtain a list of harmful chemicals. For more information, go to www.P65Warnings.ca.gov.

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Description

Callies Durastar crankshafts are designed to be substantially stronger than OEM shafts currently found in GM’s popular Duramax diesel. This improvement is the result of substantially stronger steel, considerably deeper nitride layer and unique machining features.

Durastar crankshafts are intended to be externally balanced with stock damper and flywheel configurations.

Standard Features

Deep DuraCase ™ nitride treatment that is durability and wear enhancing

Large True Form fillet radii in all journals

Keyed Shear Proof timing gear fit

Drilled rod journals for reduced inertia and ease of balance

Stock 3.898” stroke with OEM journal diameters and width

Machined from 4340, through hardened steel

Dual keyed damper fit

Conservatively rated for 800hp @ 800 ft / lb torque

Will accept OEM post and flange bolts

Machined to accept OEM flywheels / flexplates

All journals are polished to a 6Ra or finer finish

Main bearing oil holes are machined with lead-ins for enhanced cold start oil flow to rod journals

Specifications

More Information
Price	$1,401.00
Vehicle Make	Duramax
Balance Type	External
Crankshaft Stroke	3.898
Crankshaft Series	Standard Weight
Crankshaft Material	4340 Steel
Main Journal	3.146
Rod Journal	2.477
Custom Notices	⚠ PROP 65 WARNING

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