You're right. Another senior moment for me. I stand corrected. It has 400+ft/lbs of torque. Still not enough. I will check the engine either this week or next.

 

If it is a 99, then it has lower hp +trq to start off with.I thought i read in the SD forum you said it was a 99 model.

 

If I remember correctly, the V-10 didn't debut in the Ford "F" series until year 2000, at which time horsepower and torque were upped a little.

The "E" series was loaded up with V-10 first in 1997. I'm not certain, but I think it was rated at 415 ft/lbs. Mine has 169,000 miles on it and it's a dream for towing. More refined than my 460, and perhaps only slightly more torque.

 

You're right. I had a senior moment compounded by Coors. It's a 99 with 415 lbs of torque. Thanks for all the posts.

 

Bottom Line you bought the wrong truck! I Previously owned a 5th wheel race car hauler fully loaded 17000#. I went through 3 different trucks 1st a Chevy 454 dually 6% grade at 38MPH, 2nd truck Dodge V10 6% grade 43MPH ( 6% downhill 100MPH Scarry no brakes) 3rd truck 2000 Ford F450 Diesel 6% grade 52MPH. The F450 diesel is a awsome truck for towing and stopping heavy loads, my miledge towing this trailer at 70MPH with a gear vendors engaged and in overdrive was 8MPG. Bottom line the V10 would never match these numbers no matter how much money you through at it, its a different beast . Just to let you guys know my current truck is a 2001 F250 with a v10. I went with a gas truck because I no longer own the trailer, I now have a diesel pusher motorhome with 1200ft of torque to tow my 12000# trailer of toys. Total rolling mass 43000# 6% grade 40MPH, You need the right tool for the right job.

 

Or how to use the tools you have.

 

It works fine unless I try to drive at higher speeds primarily in very hilly or mountainous country. Just got back from trip to Boston, the Iowa then back. Had little trouble with I80 thru PA or Smokies. Just wish it had a little more.

 

Last night I was looking over the website at superchargersonline.com There are several superchargers designed for the v10 but some of them say they will not work on a manual tranny. (paxton and Vortex) You didn't say what kind of tranny you had... but the Whipple super doesn't have that statement about not working with an auto tranny. I'm not sure if it works with a manual or not, but it would be worth asking about.
For about $4000 you could get about 600+ foot lbs of torque at 2800 or so RPM's on the 6.8 V10. If you add some headers that some of the guys are talking about, you might be able to get close to 650 foot lbs. The chart at the website shows the torque curve still rising above 600 as RPM's are decreasing below 2800. 4800 RPM's looks to be still around or slightly under 550 ft lbs.

They show even more gains if you add a intercooler, but they don't say how to get one.

I'd say that you should be able to tow just about anything your 450 will legally haul with that kind of torque. You'll have to run 91 octane.... and I really don't know what type of mileage gains or loss should be expected. They say that they actually increase mileage, but I think that's not under load or pulling.... but I don't know.

Anyway you look at it.. that's alot of tire squealing torque.
I'm keeping it in mind for my v10... if/when that happens.
Tony

 

V-10 Torque = 425 ft. lbs.
V-10 HP (2000 +) = 310

7.3 PSD Torque = 525 ft. lbs.
7.3 PSD HP = 250

6.0 PSD Torque = 560 ft. lbs.
6.0 PSD HP = 325

 

FYI, if you go to Kenne Bell's web site, and look at his superchargers, you'll read that Kenne Bell says that headers actually cut horsepower, and he has the dyno graphs to back it up. I am not taking sides with him as I have, my whole life heard and believed that more air and fuel in, and more spent fuel and air out was the formula for more horsepower. But it is interesting reading if nothing else. I think it's KenneBell.net, or something. But it should be simple to find them with a search engine.

 

Yes, I read that a couple of months ago. I have seen header manufacturers post the difference and it really is negligible. I good set will cost anywhere from 500-600 bucks. Not worth it in my opinion.

It's interesting that horsepower is used as the gain. Horsepower is a useful figure when you want to talk speed, but useless for real power which is torque. Just look at the HP on those stump pulling diesels in the previous posting. How high is the torque and how low is the HP. That's because the engine doesn't operate in the high rpm's, and rpm's is a factor in the formula that mulitplies torque. I believe goes like this: torque X rpm divided by 5252= horsepower. I could be off on that, but you get the idea.

 

Yep, your right on with the formula. A guy who builds drag racing heads and I were discussing one time about tq vs Hp..... and he argued.."what wins races?... HP every time" and I countered... TQ wins races... and he agreed. Winning races is just putting your peak torque in the higher rpm ranges.

However, I was reading at howstuffworks.com yesterday and came up with a definition of Horsepower, that I didn't know.

What horsepower means is this: In Watt's judgement, one horse can do 33,000 foot-pounds of work every minute. So, imagine a horse raising coal out of a coal mine as shown above. A horse exerting 1 horsepower can raise 330 pounds of coal 100 feet in a minute, or 33 pounds of coal 1,000 feet in one minute, or 1,000 pounds 33 feet in one minute. You can make up whatever combination of feet and pounds you like. As long as the product is 33,000 foot-pounds in one minute, you have a horsepower.

They show more at the website http://auto.howstuffworks.com/horsepower1.htm about how they came up with the calculation to go from lb/ft to ft/lb/sec at http://auto.howstuffworks.com/question622.htm That's what I always wanted to know.

Tony

 

You're right. You can't divorce the two. A torque curve shows you the ideal amount of power over a band of RPM's. A drag racer wants a broad one that peaks early and stays up (no wise cracks) over the lifespan of the engines available RPM range. Once it drops off you change gears.

The horsepower curve just measures power in a different way and charts it accordingly.

What we are interested in doing is work. We want to move from point a to b and if you're racing you want to do that work over the smallest interval of time. It's just plain physics.

Same with pulling trailers large to small. Stay in the torque band. That's why rigs have a large range of gears.

Of course they are going computerized automatic trans that figure all that out and do it automatically in the newest rigs.

 

If anyone wants to know. 1 HP = 550 ft-lbs / sec. Horsepower is the rate at which you can use your torque at a certain RPM.