it will tote the mail regardless and gear sets are cheap if you want replace them as long as you do work yourself
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| anyone with 3.31 gears? http://www.mudmotortalk.com/mmt_v2/viewtopic.php?f=7&t=60991 |
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| Author: | Trousertrout [ Fri Mar 27, 2015 6:04 pm ] |
| Post subject: | anyone with 3.31 gears? |
Just ordered a 2015 f350. The only one I found with what I wanted has the 3.31 gears. I have always went with the 3.55. I don't think there will be that much difference. The most I tow is 12,000 lbs. Plus this 6.7 has 40 more hp and 60 more pounds of torque than my 2012. Any opinions? Thanks |
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| Author: | Bug [ Fri Mar 27, 2015 6:18 pm ] |
| Post subject: | Re: anyone with 3.31 gears? |
That's a tall gear... You a flatlander? I ran an old Chevy with 307's a long time ago, rascal would stroll but was hell on u-joints! U shouldn't have any trouble unless you're running in the mountains I wouldn't think. |
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| Author: | msm8281 [ Fri Mar 27, 2015 6:24 pm ] |
| Post subject: | Re: anyone with 3.31 gears? |
I know it's totally different but. My personal f_150 has 3:55 gears with the ecoboost engine. My work truck is the same with 3:15 gears. I couldn't find any difference pulling my airboat. I know it's not that heavy but it's like pulling a parachute. |
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| Author: | Trousertrout [ Fri Mar 27, 2015 6:24 pm ] |
| Post subject: | Re: anyone with 3.31 gears? |
It is all flat by me except once a year I take the boat to the Atlantic |
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| Author: | Howdy [ Sat Mar 28, 2015 9:33 am ] |
| Post subject: | Re: anyone with 3.31 gears? |
I would say the ratios in the transmission will be geared to accommodate the higher ratio |
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| Author: | MaXXis85 [ Tue Mar 31, 2015 7:35 am ] |
| Post subject: | Re: anyone with 3.31 gears? |
I'm sure it all has to do with unloaded fuel economy set by the EPA. I know the 6.7L in a f250 with 3.55's really hauls the mail. The transmission ratios take some of that into account as well. Typically I seen the 350's have deeper ratios such as 3.73. You may want to look into it. Is it a DRW F-350? |
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| Author: | Trousertrout [ Tue Mar 31, 2015 2:58 pm ] |
| Post subject: | Re: anyone with 3.31 gears? |
Just picked it up yesterday. I think my calculating is correct with 3.31 gears and 18" rims that brings it up to about 3.45 ratio. I was worrying about nothing. The fukn thing flies |
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| Author: | 139sst [ Tue Mar 31, 2015 7:06 pm ] |
| Post subject: | Re: anyone with 3.31 gears? |
I have the 3:31 gears and have never wanted anything higher numerically. Mine has the 20" rims and I average 18 mpg. That is normal driving not babying it. The heaviest thing I pull is about 12,000 lbs and that is on flat ground. If you don't tow in the mountains you should be fine. |
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| Author: | 50fps [ Wed Apr 01, 2015 7:14 am ] |
| Post subject: | Re: anyone with 3.31 gears? |
Rim size has no effect, tire size does and a 3.31 gear set still is a 3.31 gear set. |
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| Author: | MaXXis85 [ Wed Apr 01, 2015 9:18 am ] |
| Post subject: | Re: anyone with 3.31 gears? |
| Author: | Trousertrout [ Wed Apr 01, 2015 1:11 pm ] |
| Post subject: | Re: anyone with 3.31 gears? |
Yea. Sorry I didn't specify. The larger rim has a bigger tire. Sits 3/4".higher |
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| Author: | Gameover [ Wed Apr 01, 2015 2:53 pm ] |
| Post subject: | Re: anyone with 3.31 gears? |
You math is going wrong way. if you go from a say a 31" tire with 3:73 to a 35" tire you are going to want around a 4:10 to get you back to "stock" |
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| Author: | Trousertrout [ Wed Apr 01, 2015 3:50 pm ] |
| Post subject: | Re: anyone with 3.31 gears? |
Stop making me have buyer's remorse you assholes. Let my math be wrong and tell me that I am right |
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| Author: | Gameover [ Wed Apr 01, 2015 6:16 pm ] |
| Post subject: | Re: anyone with 3.31 gears? |
| it will tote the mail regardless and gear sets are cheap if you want replace them as long as you do work yourself
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| Author: | MaXXis85 [ Thu Apr 02, 2015 7:03 am ] |
| Post subject: | Re: anyone with 3.31 gears? |
| Author: | Gameover [ Thu Apr 02, 2015 10:13 am ] |
| Post subject: | Re: anyone with 3.31 gears? |
| Author: | CJB [ Thu Apr 02, 2015 12:25 pm ] |
| Post subject: | Re: anyone with 3.31 gears? |
Y'all are just splitting hairs now lol |
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| Author: | msm8281 [ Thu Apr 02, 2015 1:13 pm ] |
| Post subject: | Re: anyone with 3.31 gears? |
If the truck is rated for 12,000# pull 12,000# and don't worry about it. I pull approximately 10,000# with 3:55 gears and a gas engine. Although I don't pull it that far or that often. Never had a problem. I just pull it in a lower gear to be safe. |
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| Author: | MaXXis85 [ Thu Apr 02, 2015 3:16 pm ] |
| Post subject: | Re: anyone with 3.31 gears? |
| Author: | Gameover [ Thu Apr 02, 2015 3:36 pm ] |
| Post subject: | Re: anyone with 3.31 gears? |
Yep mine looked like someone took buckshot to mine |
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| Author: | 139sst [ Thu Apr 02, 2015 5:47 pm ] |
| Post subject: | Re: anyone with 3.31 gears? |
34" tires ( factory), 20" rims , 3:31 gears. Truck is rated for 15,000 lbs so the the final drive in the new six speed must be pretty low.(higher numerically).truck is fast for a big truck but I did get beat by a 6.2 raptor the other day. |
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