Callies - D333M81-CS
Crankshaft - Durastar - 3.898 in Stroke - Internal Balance - Forged Steel - GM Duramax - Each
Durastar Crankshaft: Designed to be substantially stronger than OEM shafts currently found in GM?s Duramax Diesel. Stroke 3.898, Main 3.146, Pin 2.477. Deep DuraCase nitride treatment, Large True Form Fillet radii in all journals.
DuraMag crankshafts are intended to be internally balanced.
- 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
- Standard Duramax diameter but with strength enhancing 2.154 Width
- Machined from 4340, through 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