Catalog

  • Ultra Dirt - Small Block Chevy - Billet Image
  • Ultra Dirt - Small Block Chevy - Billet

  • The Callies Ultra Dirt crankshaft family represents the most reliable and highest performing evolution in shaft design for naturally aspirated applications. Machined from Callies’ American made 4330 bar stock or proprietary 4340 forgings, this crankshaft was specifically designed for circle track and endurance racing where the least amount of reciprocating weight is demanded, while not sacrificing strength. Improvements over the outgoing XB and XL cranks include more robust pin arms to decrease torsional fatigue, radially narrowed counterweights (versus pendulum-cut), as well as more material around the centerline to virtually eliminate flexing. These changes come together to make the best endurance crankshaft available so that your engine runs better, for longer.

  • Ultra Billet – Dirt / Oval

    Standard Features

    • Made with TimkenSteel 4330
    • Stroke range from 2.750” to 4.250”
    • Standard bore spacing and 4.500” available
    • Several rod journal configurations available
    • 283, 350, 400 main journals available
    • SBC post standard, BBC post optional
    • Optional no drill finish balance available upon request
    • 8 counterweight design
    • Narrowed counterweight profile for reduced weight and windage; benefits tremendously from light bobweights
  • Ultra Billet - Dirt/Oval Crankshaft

     Stroke   Main   Pin   Cammed for rod length   Part # 
     Standard 4.400″ Bore Spacing        
    3.335 350 1.888 5.700 SAX-19@-UD
    3.500 350 2.000 5.700 SAG-14@-UD
    3.750 350 2.000 6.000 SAJ-14@-UD
    3.800 350 2.000 5.850 SAK-14@-UD
    3.875 400 2.000 6.000 SAM-24@-UD
    4.000 400 2.000 6.000 SAO-24@-UD

     

     Stroke   Main   Pin   Cammed for rod length   Part # 
     4.500″ Bore Spacing        
     *Typically ships with BBC post        
    3.875 350 1.888 5.850 S4M-19@-UD
    3.875 400 2.000 5.850 S4M-24@-UD
    4.000 350 2.000 5.850 S4O-14@-UD
    4.000 400 2.000 5.850 S4O-24@-UD
    4.125 400 2.000 6.000 S4U-24@-UD

     

    ** Only a partial listing of the available part numbers is listed here. Contact our sales team for a full list. 419-435-2711 

    Forged - Dirt/Oval Crankshafts are also available. 

    /p>

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  • Ultra Dirt - Small Block Chevy - Billet Image
  • Ultra Dirt - Small Block Chevy - Billet

  • The Callies Ultra Dirt crankshaft family represents the most reliable and highest performing evolution in shaft design for naturally aspirated applications. Machined from Callies’ American made 4330 bar stock or proprietary 4340 forgings, this crankshaft was specifically designed for circle track and endurance racing where the least amount of reciprocating weight is demanded, while not sacrificing strength. Improvements over the outgoing XB and XL cranks include more robust pin arms to decrease torsional fatigue, radially narrowed counterweights (versus pendulum-cut), as well as more material around the centerline to virtually eliminate flexing. These changes come together to make the best endurance crankshaft available so that your engine runs better, for longer.

  • Ultra Billet – Dirt / Oval

    Standard Features

    • Made with TimkenSteel 4330
    • Stroke range from 2.750” to 4.250”
    • Standard bore spacing and 4.500” available
    • Several rod journal configurations available
    • 283, 350, 400 main journals available
    • SBC post standard, BBC post optional
    • Optional no drill finish balance available upon request
    • 8 counterweight design
    • Narrowed counterweight profile for reduced weight and windage; benefits tremendously from light bobweights
  • Ultra Billet - Dirt/Oval Crankshaft

     Stroke   Main   Pin   Cammed for rod length   Part # 
     Standard 4.400″ Bore Spacing        
    3.335 350 1.888 5.700 SAX-19@-UD
    3.500 350 2.000 5.700 SAG-14@-UD
    3.750 350 2.000 6.000 SAJ-14@-UD
    3.800 350 2.000 5.850 SAK-14@-UD
    3.875 400 2.000 6.000 SAM-24@-UD
    4.000 400 2.000 6.000 SAO-24@-UD

     

     Stroke   Main   Pin   Cammed for rod length   Part # 
     4.500″ Bore Spacing        
     *Typically ships with BBC post        
    3.875 350 1.888 5.850 S4M-19@-UD
    3.875 400 2.000 5.850 S4M-24@-UD
    4.000 350 2.000 5.850 S4O-14@-UD
    4.000 400 2.000 5.850 S4O-24@-UD
    4.125 400 2.000 6.000 S4U-24@-UD

     

    ** Only a partial listing of the available part numbers is listed here. Contact our sales team for a full list. 419-435-2711 

    Forged - Dirt/Oval Crankshafts are also available. 

    /p>

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Sales: 419.435.2711

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