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Re: Allison Tranny
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Posted by Scott on May 14, 2003 at 05:14:17 from (204.117.120.200):
In Reply to: Allison Tranny posted by matthew on May 13, 2003 at 19:25:09:
What rear-end ratio do you have? What speed is this happening? My experience with most diesel pickups, with 3.73 rear end, is that each one depending on the gear ratio has a certain point that it will do just as you are describing. My ford's point is around 60-65 mph, but if you get to 70 or a little more on the interstate, it will pull like there is no tomorrow. We also noticed this with my dad's new duramax/allison combo. He also has 3.73 rear, and the shift point is about the same place. I have driven a couple of duallies with 4.10/4.11 ratio in them, and they work much better at normal highway speeds, but are geared kinda low for interstate use (you can tell it at the pump!). I have never pulled anything that I needed to drop the ole powerstroke out of overdrive in order to pull it. GUESS YOU SHOULD HAVE BOUGHT A FORD!!! (Couldn't resist!!!----I tell my dad that all the time!!!) :o)
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