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Need help choosing the 3.73 or 4.30 axle ratio?

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  #31  
Old 01-08-2014, 04:56 PM
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I would probably not have sold my '12 had I gotten the 4.30 and a 5 star tune. My $0.02
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  #32  
Old 01-12-2014, 10:51 AM
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Just my opinion, but if you are contemplating it then you probably need/want it. I ordered mine with the 4.30 and couldn't be happier. Granted I only have 700 miles on it in 2 months the truck rides great.

For reference, my 2008 F250 with the 5 speed at 70 mph ran 2000 rpms with the 3.73's. This truck with the 6 speed at 70 mph runs just a hair under 2100. Not much of a difference at all. I am looking forward to pulling our 10k pound fifth wheel this spring.

Also no highway driving at all yet other than the 210 miles home from the dealer and the gauge sets at 11.7 mpg. The same as my 08 6.4 liter.
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Old 05-03-2017, 09:45 AM
69th soldier 69th soldier is offline
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I was wondering if you got anything more in your new truck vs your old one? was it creature comforts, better mileage or just an update?
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  #34  
Old 05-03-2017, 05:33 PM
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I was wondering if you got anything more in your new truck vs your old one? was it creature comforts, better mileage or just an update?
Cougarpuller hasn't posted in a while, last one was 1/13/14.

Denny
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  #35  
Old 05-04-2017, 06:14 PM
69th soldier 69th soldier is offline
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this is great, but how to do a sticky? does it save it for me to print out later?
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Old 05-04-2017, 07:37 PM
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this is great, but how to do a sticky? does it save it for me to print out later?
I'm not sure what you what it is you want to do

Denny
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  #37  
Old 05-04-2017, 07:42 PM
Little General Little General is offline
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I ordered my 2016 just the way i wanted it including the 4.30 gears. It retailed out for $54k and I paid $39 k for it. Ordered it through the fleet dept.
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  #38  
Old 05-04-2017, 10:51 PM
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LG did that include the box and that nice bumper and everything or did you have to go somewhere else and have that stuff put on?
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  #39  
Old 05-19-2017, 07:57 PM
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When I test drove a lot truck, I thought the RPMs were way too low at highway speed. You will not be disappointed with the 4.3's
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  #40  
Old 05-20-2017, 06:42 AM
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Wondering if things have changed with the 17,s 250 with the 6r100 and 3.73,'s vs 350 with the 6r140 and 4.30's. How much of a difference in MPG's running empty at 75mph?
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  #41  
Old 05-20-2017, 09:12 PM
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Originally Posted by jsduty View Post
Wondering if things have changed with the 17,s 250 with the 6r100 and 3.73,'s vs 350 with the 6r140 and 4.30's. How much of a difference in MPG's running empty at 75mph?
There's little difference between the 6R100 and 6R140 sixth gear ratios (0.69:1 vs 0.674:1 respectively). Everything else being equal, the difference between 0.69 x 3.73 and 0.674 x 4.30 is 2.57 vs 2.90, or +12.7%.

Running empty, I'd expect the 3.73 axle ratio to deliver better fuel economy.

HTH,
Jim / crewzer
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