Thread: 3500HD GMC/Chevy or Ford F450?
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  #32  
Old 01-31-2013, 08:27 PM
Marek Marek is offline
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Join Date: Nov 2005
Location: Maryland
Posts: 1,059
If you are looking at a 450 w/ v10 you may see 9 mpg with a tail wind and thats it . They are limited to the 4:88 rears
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