To be honest with you I’ve never seen one like that either. They had an oddball 13 speed underdrive trans back than but the knobs I’ve seen would say UD on them.
That is still cool as hell tho and a great “anti-theft” device from newbies.
Difference in 13 speeds?
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by mile marker 27, Mar 11, 2020.
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That is a very interesting shift pattern. By the looks of it you can hi range and split the “hidden” no-no gear that is normally in the lo position. Things that make you go hmmmm.
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SmallPackage, magoo68, mile marker 27 and 1 other person Thank this.
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Thanks for posting that KVB. Obviously those aren’t popular anymore
KVB Thanks this. -
Ahhh. The 613. Heard of them spoken about a lot in the past. Everytime I’ve heard mention of them they were either in medium size trucks or behind gas burners. Never personally seen one. Thanks @KVB.
mile marker 27 and KVB Thank this.
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