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Mack 6 Speed Air Shift


greg

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I was recently told that you could take the back cover off a 6 speed airshift

trans. and add a couple of gears and make it a 12 speed. This seems like

it a rumor to me, anyone know of the truth? :idunno:

thanks greg

The 12 spd. has a whole other box bolted to the front, for your low range, for a total of 3 boxes bolted together, a pretty large tranny. I have one in my dump truck, far as i'm concerned the best tranny mack ever made. terry

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