fredward Posted November 4, 2012 Share Posted November 4, 2012 Hello hope some one can help have a 690t single axle mack with 5 speed want to swap transmission for something better any suggestions on transmission 8 or 9 speed. And what about rear motor mounts Quote Link to comment https://www.bigmacktrucks.com/topic/28140-transmission-swap/ Share on other sites More sharing options...
David Posted November 4, 2012 Share Posted November 4, 2012 We're going to need a little more info to be of any help. Which five speed do you have now? What rear ratio? What do you consider "better"? Quote Link to comment https://www.bigmacktrucks.com/topic/28140-transmission-swap/#findComment-144406 Share on other sites More sharing options...
j hancock Posted November 4, 2012 Share Posted November 4, 2012 Depending on type of use and gear ratio, a Mack 2090 might be a nice upgrade for you. Mounts on the trans. Quote JimIt doesn't cost anything to pay attention. Link to comment https://www.bigmacktrucks.com/topic/28140-transmission-swap/#findComment-144407 Share on other sites More sharing options...
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