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97 f450 gearing

  #1  
Old 07-31-2016, 04:54 PM
Travis SPG
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97 f450 gearing

Alright so I just bought a 97 f450 stake body 5spd and the gearing sucks. I mainly use the truck for hauling materials (dirt,mulch,sand,stone,pavers) and occasionally tow a small landscaping trailer or mini excavator/skid steer. If I'm going down the highway at 60mph, it's running at 2800rpms. The truck is drivin on the highway a lot and the fuel mileage is absolute poop. I don't tow a bunch of weight enough to make that a huge factor. I just need better mpg's around town and highway. Any idea of what gears I should run?
 
  #2  
Old 07-31-2016, 08:34 PM
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I'd go with 4.10s. Best of both worlds in my opinion.
 
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Old 07-31-2016, 10:32 PM
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X2 or even 3.73 will suit you well.
 
  #4  
Old 08-01-2016, 09:37 AM
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your F-SuperDuty ( it is not a F450) has either 4.63 or 5.13 gears in a Dana 80 axle. running 2800 rpm at 60 mph, i would venture to say you have 5.13 gears.
regearing that D-80 can get very expensive depending on whether you need a different carrier or not.
 
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Old 08-01-2016, 10:21 PM
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I'll trade ya for the sterling 10.25 3.55 ls I've got in my 1 ton parts truck lol
 
  #6  
Old 08-07-2016, 11:22 AM
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I appreciate yalls help. Even tho it's a work truck I want to do some stuff to it. I've built 100's of gas motors but I'm new to the diesel world so I'll be lurkin around the site for a while. Thanks again for the help
 
  #7  
Old 08-08-2016, 04:52 PM
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Their is a reason the F-superdutys have a 15,000gvw. The gears they came with is part of that
 
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