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What transmission?


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Hi, just checking in to see if you can help me out: I'm trying to figure out the proper term/designation for the transmission in my first truck from over 20 years ago. I was working for a concrete company, and I was driving a '78 Mack R type, with a two stick transmission: one controlled the 5 speeds, and the other was forward high/forward low/reverse. (Also, mine was one of only two we had with an air controlled switch on the dash for deep reduction. Great truck for special pours!)

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Thanks. I'll move my comment over there. (Rookie at these forums, you know!) Before I do, though, I'll tell you a little more: I found somewhere else a description of the engine that matched how we drive these (long lower band, allowing the truck to pull fully loaded on only five gears). In street driving, we drove them ( we had a while fleet if them, BTW. Boss would buy them cheap wherever he could find them, any condition, and rebuild them) just like a regular five speed. We would only use the second stuck to move from forward to reverse, or into low for off road applications.

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