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4.30 gear to a 4.10 gear in fuel save or uses more

Discussion in 'Commercial Snow Removal' started by dieselfreak, Jun 8, 2005.

  1. dieselfreak

    dieselfreak Member
    Messages: 60

    with a ford F350 dulie the tow boss package you haft to get a 4.30 gear does that eat up more diesel fuel then a 4.10 gear you can get with out the tow boss package.
  2. justme-

    justme- 2000 Club Member
    Messages: 2,138

    4.30 will give more torque and lower the gear ratio making engine RPM higher and therefore useing MORE fuel than 4.10's.

    Standard ratio on my Ram is 3.56, Ltd slip is only avail with low gears which are 4.10. I get 16ish MPG with 4.10's where the same truck with 3.56 gets 20+.

    Highway is the real killer for low gears- I am at 2200rpm at 70mph where 3.56 would put me at about 1800.

    the tow boss package is designed for those hauling trailers (I am assumeing based on the name) so heavier weights need lower gears.