Casper1988 Posted March 29, 2017 Share Posted March 29, 2017 Hi All, I bought a 1988 R model tri-axle log truck recently with a Prentice 120 loader. Was a down south truck and clean compared to what you find up north here in New England. It has a 2070 Maxi torque 7 speed transmission. two lows and then direct five. Fourth to fifth is amazingly high jump (70mph all day ) I live in hill country and 4th direct is the max as I have delivered some loads already. Third is good but need a split gear between 3 and 4. 5.37 rears I believe, would it be cost prohibitive to put a 13 speed into this truck as I do plan on keeping it because it is rust free. Does it bolt up if a Mack tranny is used? Thanks. Quote Link to comment Share on other sites More sharing options...
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