You dont tow but you want to upgrade to a more heavy duty truck that has more TQ! If your doing 80 then why on earth would you need more power to go faster? Are you driving on the autobahn?

 

Not looking to faster than 80, but to maintain 80, this 5.4 does not have enough torque to accelerate or pass from 60-80. It does do it, but there is a delay in transmission and it downshifts a gear bringing rpm up.

 

Its 1/8 diff in back and 1/2 in front. Way too much which affects handling. The super duty at least is a solid front axle so it may not handle as well, but will hold alignment longer as it can withstand more abuse on one side.

 

You do know that the 6 speed is designed to change gear often. It's one of the reason's it gets such great MPG. But to be honest if you are trying to pass people in the 60-80mph reigon then you aint gonna find any truck that will do it quick. It sounds like you need a car with 300+hp. Even my WRX STI pro drive which was tuned was unsafe passing on hills doing 60+ mph. That thing could move like stink but still wouldnt want to be passing people on a steep grade with a corner coming up. But if you need the extra TQ for pulling a trailer up a steep grade then the V10 would be a good option. Also i wouldnt want to be doing 50k+ miles a year in a F250. A lot more comfortable in a F150.

 

I would consider keeping it if roush made a super charger, but they don't with the 2009's. its a tough choice, but I cannot afford a diesel now, and don't like the regeneration of the dpf. The V10 doesn't have much restrictive emissions which is why its being discontinued and not offered currently in calif states. So I would think it would get better economy than the 5.4 F150 as its not straining on the 2 7 mile grades I travel daily.

 

Somehow you think you're gonna lose almost 200 ft/lbs of torque in the diesel. You would if you had 30% or higher parasitic loss through the drivetrain. The gas and diesel SD's use the same running gear so you'd have the same percentage power loss on the gasser. With 30% loss you'd be down to 455 ft/lbs* in the diesel and 319.9 ft/lbs* with the gasser. How's that better torque at the rear wheels than a diesel?

*Based on 2010 Ford Super Duty Engine Specs. Available here: http://www.fordvehicles.com/trucks/s...ations/engine/

A tuner will help with the delay.

Could you imagine trying to pass if the trans didn't drop a gear (or 2)? You'd sure be bitching then. The reason it drops a gear is because it's called, get this, a PASSING gear.

 

If you can wait a few more months I'm sure plenty of companies will start rolling out there S/C.

And the V10 WILL NOT get anywhere near the mileage the 5.4 does. I've been around way to many to know that.

 

Let me get this straight. You can't afford a diesel, but you are willing to spend 5-6k to put on a super charger. Or take a huge depreciation hit to trade in a year old truck on something that will get 20% worse fuel economy and drive said truck 50k miles per year. All because your truck downshifts to maintain 80 MPH up a couple long hills?

Hmmm...sounds like someone needs to take a math class...or learn to drive at a more realistic speed.

 

Would never spend that much to super charge. From what I have read, the 6.8 V10 with 4.30 gearing has more rear wheel torque and acceleration than the new diesels. The new diesel is less powerful than the out going 6.0, because of the increased emissions with the regeneration it must do.

My F150, only averages 15.5 mpg. The 6.8 with 6 speed manual I am looking at should do the same or better.

 

Good luck with that.

 

I've ask around a little because i wanted a V10 6.8L supercrew FX4 and changed my mind after reading average of 12 mpg...

 

Let me get this right, you don't tow,haul, or work a truck but you want more get up & go on hills......If a 5.4 hooked up to a 6-speed tranny does not float your boat in a 1/2 ton, get a BMW dude!!! Geeezzzz!!!

 

Test drove today both the 6 speed manual V10, and auto V10. Both new 2009 F250. Impresive. The manual will leave my F150 in the dust, and even the auto still out accelerated up grade far better than the F150.

Don't get me wrong, I love the F150 for its roomy interior and plush leather and awsome stereo, but power sucks.

 

What if you trade now and get 12 or maybe 14 mpgs at the most and then next year the 2011 has the coyote 5.0 in the F150.It will have about 400 hp and 400ft. lb. torque.Get that with 3.73 gears and it should run good with good mpgs.With a new engine lineup they may introduce the 2011 early.The 2010s this year was out in august.
My 4.6 3v with 3.73 axle has plenty of power and does not downshift all the time and I live in a hilly state also.
If you have a 4x2 maybe you could consider putting in after market 4.10 gears.
Back in the early 80s I changed the ring and penion on a police car from 2.76 ratio to 3.43 ratio and they said it would run 20 mph faster.I did change the speedometer gear to make speedometer accurate.Had more power to overcome wind resistence.Fuel economy remained the same.

 

The V10 gets most of its torque at 3250 rpm, compared to 3500 rpm with the F150 5.4. Granted the auto I drove with the 10 was a 4.10 ratio and the transmission gearing is different, and the truck is 1000lbs heavier, I still think mpg would be close to the same as it wouldn't work as hard on the hills. On flat land, yes, the F150 most likely is more economical

I drive I84 between Milford PA and Harriman NY daily round trip. In the moring I have one steep 5 mile grade, and a 7 mile and 5 mile grade in the evening. With the compressor running on hot days, its very sluggish. This is where having more torque, lower rpm, and less transmission torque management may paff off.