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C4500 8.1 with allison.. Opinions?? Anyone with this setup?

Discussion in 'Trucks and Trailers' started by BLandscaping, Dec 18, 2013.

  1. Chris_NC06

    Chris_NC06 LawnSite Fanatic
    Male, from Sanford, NC
    Posts: 6,830

    Last edited: Jan 11, 2014
  2. M & L

    M & L LawnSite Senior Member
    Posts: 291

    That is a lot of truck right there for a good price.
  3. F4rm3rj03

    F4rm3rj03 LawnSite Senior Member
    Posts: 343

    Turns out ALL of these Allisions in the C4500/C5500 have six forward gears. Kits and reprogramming can open the door to an extra overdrive gear that exists within the transmission. Newer years require only a re-flashing.

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