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FL 60 shifting
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doggin
Reg. Mar 2013
Posted 2013-03-27 10:20 AM (#5479)
Subject: FL 60 shifting





Posts: 2

I have a 2000 FL60 sprotchasis witha a 6 speed allison transmission. My question is about the transmission shifting. When i put the retarder (pac brake) on, the transmission shifts from 6th to 4th. Is this normal. Seems like this would be hard on the transmission. Any thoughts?
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doggin
Reg. Mar 2013
Posted 2013-03-27 3:46 PM (#5481 - in reply to #5479)
Subject: RE: FL 60 shifting





Posts: 2

Thanks for the info.
I know when it goes from 6 to 4 it is a little extreme.
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PaulChristenson
Reg. Jan 2007
Posted 2013-04-18 3:57 AM (#5489 - in reply to #5479)
Subject: RE: FL 60 shifting






Posts: 197

Location: Vermont
5th AND 6th are both overdrives...4th is normally a 1.00 ratio...  

Here are the way the allison are ratioed for the duramax
http://www.duramaxdieselspecs.com/allison_transmission.html

Edited by PaulChristenson 2013-04-18 4:00 AM
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