Catalog

  • Duramag Image

  • Duramag

  • The Callies Duramag billet crankshaft is designed to be the last crank you ever need for your LB7 thru LML Duramax engine. These cranks are fully machined from domestically-sourced 4330 steel in our Ohio plant. Intended for the most extreme applications, some features of these shafts include large fillet radii across all journals, a nitrided surface, narrowed rod journals (2.154”), and straight shot oil holes. Additionally, these billet cranks are intended for an internal balance, resulting in reduced harmonics under high loads.

  • DuraMag

    Standard Features

    • Deep DuraCase™ nitride treatment
    • Large True Form fillet radii in all journals
    • Keyed Shear Proof timing gear fit
    • Drilled rod journals for reduced inertia and ease of balance
    • Standard Duramax diameter but with strength enhancing 2.154 width
    • Machined from 4330 hardened steel
    • Dual Keyed Damper fit
    • 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
  • Stroke Main Pin Cammed for Rod Length Part #
             
    3.898 3.146 2.477 6.418 D333MU@-MB

     

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  • Duramag Image

  • Duramag

  • The Callies Duramag billet crankshaft is designed to be the last crank you ever need for your LB7 thru LML Duramax engine. These cranks are fully machined from domestically-sourced 4330 steel in our Ohio plant. Intended for the most extreme applications, some features of these shafts include large fillet radii across all journals, a nitrided surface, narrowed rod journals (2.154”), and straight shot oil holes. Additionally, these billet cranks are intended for an internal balance, resulting in reduced harmonics under high loads.

  • DuraMag

    Standard Features

    • Deep DuraCase™ nitride treatment
    • Large True Form fillet radii in all journals
    • Keyed Shear Proof timing gear fit
    • Drilled rod journals for reduced inertia and ease of balance
    • Standard Duramax diameter but with strength enhancing 2.154 width
    • Machined from 4330 hardened steel
    • Dual Keyed Damper fit
    • 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
  • Stroke Main Pin Cammed for Rod Length Part #
             
    3.898 3.146 2.477 6.418 D333MU@-MB

     

  • « Back to Catalog

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