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  1. H

    K3500 Trans/gearing help

    I am running 285/75-16s. The original window sticker says 4.10s. I think with the 4" lift I may be able to fit 35s. Or should I consider 3.73s?
  2. H

    K3500 Trans/gearing help

    1986 k3500 Dually Hello everyone. I'm new here and I have an 86 3500 dually 4x4. 454 4 speed. At 55 MPh I feel like the motor is screaming. Help

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