j hancock Posted July 13, 2017 Share Posted July 13, 2017 TRTXL1070 transmission cut away display at the Mack Museum. 1 Quote JimIt doesn't cost anything to pay attention. Link to comment https://www.bigmacktrucks.com/topic/50466-transmission-porn/ Share on other sites More sharing options...
Lmackattack Posted July 13, 2017 Share Posted July 13, 2017 I was not aware it was available that late into the 90s 1 Quote Link to comment https://www.bigmacktrucks.com/topic/50466-transmission-porn/#findComment-374795 Share on other sites More sharing options...
Freightrain Posted July 13, 2017 Share Posted July 13, 2017 One for sale in the classifieds. Are they good? I suppose it is only for dual disc clutch and can't work without a bellhousing change in my B? Classified listed as twin stick but has "B" on the case and that is suppose to be air shift? 1 Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment https://www.bigmacktrucks.com/topic/50466-transmission-porn/#findComment-374802 Share on other sites More sharing options...
j hancock Posted July 13, 2017 Author Share Posted July 13, 2017 The "B" is indeed for the version with the dash mounted air shift switch for the front compound to control low and direct. The one pictured above has a stick for shifting between low and direct. There is an interlock so low can only be used with first gear. The other stick has the Mack Selectair valve for high, direct and reverse. Good transmission. With a few parts, changing some parts and some fab, it can be put into the race truck. 2 Quote JimIt doesn't cost anything to pay attention. Link to comment https://www.bigmacktrucks.com/topic/50466-transmission-porn/#findComment-374818 Share on other sites More sharing options...
Popular Post terry Posted July 13, 2017 Popular Post Share Posted July 13, 2017 As far as I'm concerned the 12 spd is one of the best transmissions made. terry 4 Quote Link to comment https://www.bigmacktrucks.com/topic/50466-transmission-porn/#findComment-374819 Share on other sites More sharing options...
Freightrain Posted July 15, 2017 Share Posted July 15, 2017 That is why I was looking at it. Priced right? $1300: https://www.bigmacktrucks.com/topic/49895-mack-parts/ It shows two sticks laying on top? But has B on case? Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment https://www.bigmacktrucks.com/topic/50466-transmission-porn/#findComment-374916 Share on other sites More sharing options...
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