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  • Compstar – Viper Billet Image
  • Compstar – Viper Billet

  • Compstar billet crankshafts for the Viper are meant for hardcore race applications. These shafts are machined from 4340 steel for durability and nitride surface hardened for excellent bearing life. Compstar Viper V-10’s are produced with 2.100 Chevy rod journal diameters and widths, and are available with either 10mm or 7/16 flange threads. Strokes available will be 4.200” and 3.960”. Compstar Viper V-10’s can be ordered with a (60-2) notch tone wheel configuration.

  • Compstar – Viper Billet

    Standard Features

    • Machined from 4340 steel
    • Produced with 2.100 Chevy rod journal diameters and widths
    • Available with either 10mm or 7/16 flange threads
    • Strokes available will be 4.200” and 3.960
  • Compstar Viper V-10 Crankshaft

    Stroke Main Pins Cammed for rod Part #
    3.960 3.000 2.100 6.200 KV3291H-CS or T21002
    4.200 3.000 2.100 6.200 KV1291H-CS or T21003


    Viper Ultra Enforcer I-Beam

    Length Journal Typ. Wt.   Part #
    6.200 2.123 764 g.   U14345


    Viper Ultra H-Beam

    Length Journal Typ. Wt.   Part #
    6.200 2.100 660 g.   U16120


    Viper Compstar H-Beam

    Length Journal Typ. Wt.   Part #
    6.150 2.125 630 g.   CSD6150GS2E1AH
    6.250 2.125 628 g.    CSD6250GS2E1AH



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  • Compstar – Viper Billet Image
  • Compstar – Viper Billet

  • Compstar billet crankshafts for the Viper are meant for hardcore race applications. These shafts are machined from 4340 steel for durability and nitride surface hardened for excellent bearing life. Compstar Viper V-10’s are produced with 2.100 Chevy rod journal diameters and widths, and are available with either 10mm or 7/16 flange threads. Strokes available will be 4.200” and 3.960”. Compstar Viper V-10’s can be ordered with a (60-2) notch tone wheel configuration.

  • Compstar – Viper Billet

    Standard Features

    • Machined from 4340 steel
    • Produced with 2.100 Chevy rod journal diameters and widths
    • Available with either 10mm or 7/16 flange threads
    • Strokes available will be 4.200” and 3.960
  • Compstar Viper V-10 Crankshaft

    Stroke Main Pins Cammed for rod Part #
    3.960 3.000 2.100 6.200 KV3291H-CS or T21002
    4.200 3.000 2.100 6.200 KV1291H-CS or T21003


    Viper Ultra Enforcer I-Beam

    Length Journal Typ. Wt.   Part #
    6.200 2.123 764 g.   U14345


    Viper Ultra H-Beam

    Length Journal Typ. Wt.   Part #
    6.200 2.100 660 g.   U16120


    Viper Compstar H-Beam

    Length Journal Typ. Wt.   Part #
    6.150 2.125 630 g.   CSD6150GS2E1AH
    6.250 2.125 628 g.    CSD6250GS2E1AH



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