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post #1 of 6 Old 06-14-2012, 08:48 AM Thread Starter
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towing

Hello Guys,
For those that tow what is the sweet spot r.p.m for you guys ? on flat road and mountains.
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post #2 of 6 Old 06-14-2012, 10:26 AM
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2,000 rpm for my F 350



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Hello Guys,
For those that tow what is the sweet spot r.p.m for you guys ? on flat road and mountains.
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post #3 of 6 Old 06-14-2012, 10:31 AM
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Flats, 1800-2000
Mountains, it will depend on the grade, but I've seen 2300-2800

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post #4 of 6 Old 06-14-2012, 11:10 AM
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post #5 of 6 Old 06-14-2012, 12:27 PM
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Some of this will depend on your gearing and tires:

Mind you I run the 4.30 gears on stock 245/75R17's:
On the flats: 2,000 rpm - 60 mph, loads will determine EGT's will settle.
On the grades: 2,200 - 2,500 rpm - 60-65mph, driving the truck off EGT's and EOT.

Both figures are in OD with the 5R110, if I feel the need to start moving more air/oil, I'll drop it down gears accourdingly.
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post #6 of 6 Old 06-14-2012, 09:16 PM
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Originally Posted by colo_dually View Post
Some of this will depend on your gearing and tires:

Mind you I run the 4.30 gears on stock 245/75R17's:
On the flats: 2,000 rpm - 60 mph, loads will determine EGT's will settle.
On the grades: 2,200 - 2,500 rpm - 60-65mph, driving the truck off EGT's and EOT.

Both figures are in OD with the 5R110, if I feel the need to start moving more air/oil, I'll drop it down gears accourdingly.
Just like colo_dually says, it depends on the gear ratio, tranny(auto or manual), and tires. Also how much you are towing. I just towed 10k from Montana to Southern Cal. down I-15 running 3:73 gears on Toyo 255/85/16 Tires. I had to run up hills about 50-55 and some at 45 for a while. I would rather take my time to get there than blow an engine or tranny. I also run according to my temps. On long and steep grades I have to slow it down to keep temps in check. If I had the ability to manually control my fan it would be even better. Maybe someday. One thing to remember is just because your truck can run up a hill at highers speeds doesn't mean you should do it. Just my $.02 worth. Hope this helps

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