towing 10k or more with 6" and 37's - Ford Powerstroke Diesel Forum
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post #1 of 3 Old 07-01-2013, 10:07 PM Thread Starter
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towing 10k or more with 6" and 37's

I have a 2005 cc lb, 6.0, auto, SCT innovative custom tunes, Garrett Powermaxx turbo, and 6 inch fabtech on 37s. I just got a 30 foot bumper pull toy hauler. loaded weight is 10k or so. Here in WA where its not exactly flat, it seems that my truck seems happy towing about 60 mph and 22 or 2300 RPMs. seems like i see alot of similarly lifted trucks pulling way bigger 5th wheels at 75 mph or more. am i missing something here? if i try and go faster than 65, its screaming 2800-3200 rpms....

I do still have the stock 3.73 gears which i am sure doent help my case.

What do you guys think????
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post #2 of 3 Old 07-03-2013, 12:31 PM
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Yep your missing something. My truck does 80mph at 2300rpm with 4.56 and 37s. I'm guessing your truck has 4.56s and you didn't know.

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post #3 of 3 Old 07-03-2013, 01:53 PM
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Gearing must have been changed.

Another data point for you, I'm running 4.30s with stock 245/75R17s (31") and sit at 2000rpms at 60 mph

2007 F-350 XLT 6.0L PSD Dually 'Jezebel'
TorqShift 4x4 CC/LB 4.30LS - Tow Boss Package

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