Catalog

  • Ultra Dirt - Small Block Ford - Forged Image
  • Ultra Dirt - Small Block Ford - Forged

  • 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 Dirt – Small Block Ford - Forged

    Standard Features

    • Made with Callies proprietary 4340 forging
    • Stroke range from 2.700” to 4.250”
    • Rod journal sizes 1.850”, 1.888”, 2.000”, 2.100”, 2.123”
    • 351 Cleveland or 302 Ford type main diameters
    • Optional full internal balance to your specific assembly weight
    • Uniquely milled counterweight profiles for reduced weight and windage
    • All rod journals lightened
    • Gun drilled mains
  • Ultra Dirt - Small Block Ford - Forged

     Stroke   Main   Pin   Cammed for rod length   Part # 
    3.400 302 2.100 5.400 UWJ01V-UD 
    3.250 302 2.100 5.400 UJE01V-UD
    3.500 302 2.100 6.000 EDG01V-UD
    3.500 351C 2.100 6.000 EFG71V-UD
    3.625 351C 2.100 6.100 EFH71V-UD
    3.750 351C 2.000 6.100 EFJ74V-UD
    3.750 351C 2.100 6.100 EFJ71V-UD
    4.000 351C 2.000 6.200 EFO74V-UD
    4.000 351C 2.100 6.200 EFO71V-UD
    4.125 351C 2.100 6.200 EFU71V-UD

      

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

    Billet - Ultra Dirt Crankshafts are also available. 

    /p>

  • « Back to Catalog
  • Ultra Dirt - Small Block Ford - Forged Image
  • Ultra Dirt - Small Block Ford - Forged

  • 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 Dirt – Small Block Ford - Forged

    Standard Features

    • Made with Callies proprietary 4340 forging
    • Stroke range from 2.700” to 4.250”
    • Rod journal sizes 1.850”, 1.888”, 2.000”, 2.100”, 2.123”
    • 351 Cleveland or 302 Ford type main diameters
    • Optional full internal balance to your specific assembly weight
    • Uniquely milled counterweight profiles for reduced weight and windage
    • All rod journals lightened
    • Gun drilled mains
  • Ultra Dirt - Small Block Ford - Forged

     Stroke   Main   Pin   Cammed for rod length   Part # 
    3.400 302 2.100 5.400 UWJ01V-UD 
    3.250 302 2.100 5.400 UJE01V-UD
    3.500 302 2.100 6.000 EDG01V-UD
    3.500 351C 2.100 6.000 EFG71V-UD
    3.625 351C 2.100 6.100 EFH71V-UD
    3.750 351C 2.000 6.100 EFJ74V-UD
    3.750 351C 2.100 6.100 EFJ71V-UD
    4.000 351C 2.000 6.200 EFO74V-UD
    4.000 351C 2.100 6.200 EFO71V-UD
    4.125 351C 2.100 6.200 EFU71V-UD

      

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

    Billet - Ultra Dirt Crankshafts are also available. 

    /p>

  • « Back to Catalog

Sales: 419.435.2711

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