Community Forums

Matusky · 04-08-2011, 09:02 PM

Tomorrow I'm signing and taking delivery of a 2011 F350 SRW short bed with the 6.2 gas motor....... I'm trading in my 2007 F350 dually that has the 6.0 diesel and the 4.30 rear,..... The new gas truck has the 3.73 rear...... My toy hauler is a 2011 Keystone Raptor 3912LEV..... My 07 truck pulled it pretty well...... It weighs in around 14,500 I believe...... Is there any one out there with experience with a change like this?

KIX · 04-08-2011, 09:19 PM

Quote:

Originally Posted by Matusky

Tomorrow I'm signing and taking delivery of a 2011 F350 SRW short bed with the 6.2 gas motor....... I'm trading in my 2007 F350 dually that has the 6.0 diesel and the 4.30 rear,..... The new gas truck has the 3.73 rear...... My toy hauler is a 2011 Keystone Raptor 3912LEV..... My 07 truck pulled it pretty well...... It weighs in around 14,500 I believe...... Is there any one out there with experience with a change like this?

Someone more technically inclined than I am would have to give you a more in-depth answer. But, here's some potential problems in my opinion.

1. The old diesel truck had more torque than the new one you're getting. the result will be acceleration will be significantly reduced.
2. The differential gearing in the diesel would provide much better pulling performance due to the "taller" 4.30 gearing.
3. The new truck will likely give better fuel mileage on the highway without a tow of 14,500. With the 14,500 tow my guess is the fuel mpg will be less than the diesel.
4. If the purpose of buying the new truck is to pull your 14,500 trailer I would suggest much more "homework" before you make the trade.

Good luck

Ray,IN · 04-08-2011, 09:47 PM

In my opinion you will be greatly disappointed with that new trucks performance towing that 5er. I suspect the new truck will be overloaded on the rear axle with single wheels, which is the limiting factor for pin weight. This worksheet/calculator will help you decide. Tow Vehicle/Trailer Calculations Demonstrator

RVhauler · 04-08-2011, 09:58 PM

Believe you will find the Gasser comes up a bit short on the long hills

KIX · 04-08-2011, 10:06 PM

No response from the OP makes me wonder what "Quick Help" meant

Grodyman · 04-09-2011, 01:30 AM

I would at least get 4.30 gears with the gasser.

Gman

Matusky · 04-09-2011, 05:33 AM

After reading about all the available performance upgrades to the 6.2,.... I think I'm gonna just do it,..... Maintenance will be less...... The truck is over $7,000 cheaper because of not having the diesel and the fuel here is .30 a gal less..... And I understand with the newer 6 speed trans, it helps a bit with the gearing..... Procharger also has a kit that adds 200hp and over 150 ft/lb of torque to this truck which I can use to get me back above the numbers of my old diesel if I have to........ Worst case is that I'll either get a smaller RV or a bigger truck in a few years depending on what the price of fuel looks like

Sorry so late to reply,..... I dozed off reading ford truck forums on my iPad, lol

RustyJC · 04-09-2011, 06:11 AM

Having towed 5th wheels over the last 15 years with both gas-engine and diesel duallies, I honestly believe you're moving the wrong direction. The torque curve of a gasser means that you'll be spending a lot of time in the lower gears with the engine revving away and the fuel gauge dropping like a rock, the 3.73 gears are not preferred for towing, and the short bed/SRW configuration is not the way to go for a heavy 5th wheel. Having said all that, it appears that you've made your decision, so all I can do is wish you luck.....

Rusty

jwomack · 04-09-2011, 06:27 AM

I just traded my 2010 2500HD 6.0 gasser for a 2011 3500HD 6.6 diesel. Both with 6 speed and 3.73 gears. milage towing @ 65-70 in gasser was 6 +or- and greatly affected by wind and hills. Diesel got 10+ on 1st haul also running 65-70. Unloaded gasser averaged 11.8 diesel is averaging 14.8.

KIX · 04-09-2011, 02:25 PM

Be aware that chipping your new truck may be teh second mistake you make. Is the transmission, rear end, etc designed to withstand another 200 HP??? Yessir, you can certainly do it but thecosts is most likely going to be in excess of the cost of the chipset.

Superslif · 04-09-2011, 02:44 PM

My brother has a 38' Raptor 5er. He tried to tow it with a Dodge 2500 V-10 SRW gasser. The V-10 just couldn't do it....Over-heated twice the first big hill off the freeway. Had to upgrade to a Dodge 3500 (SRW) diesel....His is 9500 dry, but with 6 ATV's and 100 gallons of fresh, 35 gallons of fuel in the trailer and a army of tools and air tanks, He is pushing the 5k cargo limit plus some. O + 4 kids....There was no other ? but to go diesel....

Ray,IN · 04-09-2011, 06:47 PM

When you "chip" this 2011 pickup you can expect to have warranty issues within the 5yr/60K mile period.

wingnut60 · 04-09-2011, 08:15 PM

I believe he mentioned "Procharger" which I believe refers to a supercharger--big ideas for a new engine, and yes, warranty issues.
Joe

Matusky · 04-09-2011, 11:19 PM

So after much deliberation and reading the various replies,.... I bit the bullet and blew the other $8k right off and got the diesel,..... I must say the 6.7 powerstroke is a surprisingly powerful and quiet engine,...... I picked up this truck this morning with 3 miles and now I have 190 miles on it,.... Did a bunch of driving today! Tomorrow morning I'll be hooking up my 8,500 lb tool trailer to go back to the dealership to get my fifth wheel hitch, light bar, etc out of my old truck....... I'll let you guys know how it goes...... After all that was said here and a nice long conversation with my friend who's a mechanic and works on trucks like this all the time...... I guess I'm happy I kept with what I had and didn't take the risk