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  • Ultra Sprint Image
  • Ultra Sprint

  • The Ultra Sprint billet crankshaft has been designed to meet the grueling demands of 410 and 360 Sprint Car applications.  For improved performance and durability, primary counterweights have been thinned down reducing windage resistance while interior counterweights have been maximized to minimize intermediate (2 & 4) bearing loads.  All Ultra Sprint billets feature the Callies Aeroshed surface treatment and are available in strokes from 3.300 to 3.825 with any variety of rod and main size configuration. Typical weight 3.800/400/1.888 = 44lbs.

  • Ultra Sprint

    Standard Features

    • Callies Aeroshed surface treatment
    • Available in strokes from 3.300 to 3.825
    • Typical weight 3.800/400/1.888 = 44lbs
  • Stroke Pin Size Main Size     Part # MSRP
    3.5500 1.8880 (350) GM Small Block – 2.448 Ultra Sprint Car SAT-19@-US $3,324.00
    3.8120 1.8880 (400) GM Small Block – 2.648 Ultra Sprint Car SA1929@-US $3,324.00
    3.8200 1.8880 (350) GM Small Block – 2.448 Ultra Sprint Car SA1319@-US $3,324.00
    3.8200 1.8880 (350) GM Small Block – 2.448 Ultra Sprint Car SAZ-19@-US $3,324.00
  • « Back to Catalogue
  • Ultra Sprint Image
  • Ultra Sprint

  • The Ultra Sprint billet crankshaft has been designed to meet the grueling demands of 410 and 360 Sprint Car applications.  For improved performance and durability, primary counterweights have been thinned down reducing windage resistance while interior counterweights have been maximized to minimize intermediate (2 & 4) bearing loads.  All Ultra Sprint billets feature the Callies Aeroshed surface treatment and are available in strokes from 3.300 to 3.825 with any variety of rod and main size configuration. Typical weight 3.800/400/1.888 = 44lbs.

  • Ultra Sprint

    Standard Features

    • Callies Aeroshed surface treatment
    • Available in strokes from 3.300 to 3.825
    • Typical weight 3.800/400/1.888 = 44lbs
  • Stroke Pin Size Main Size     Part # MSRP
    3.5500 1.8880 (350) GM Small Block – 2.448 Ultra Sprint Car SAT-19@-US $3,324.00
    3.8120 1.8880 (400) GM Small Block – 2.648 Ultra Sprint Car SA1929@-US $3,324.00
    3.8200 1.8880 (350) GM Small Block – 2.448 Ultra Sprint Car SA1319@-US $3,324.00
    3.8200 1.8880 (350) GM Small Block – 2.448 Ultra Sprint Car SAZ-19@-US $3,324.00
  • « Back to Catalogue

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