I for the life of me can't see why you would push any power stroke passed 2400 RPm while towing
the torque flattens out passed 2200 and HP starts to flatten at 2600 with a small gain to 3300
while turning the RPMs higher won't hurt the engine it will sure make your wallet squeal

 

The 6.0 will rev to 4400 rpm on a downhill using Tow Haul for compression hold back if the hill is steep and the load heavy. Comparing rev's keep in mind, it makes most of its power at 2200 rpm. This is the sweet spot pulling hills, but it will shift down and rev past 3000 until boost is maximized and then shift back down. I have owned a 5.4 and driven several 7.3 and own the 6.0 in the sig. There is NO COMPARISON between either older motors and a 6.0 pulling 10000 lbs. Depending on how you use the accelerator pedal (not a gas pedel), you can tell it to pull in a lower gear with higher revs or you can feather it out to pull in 4th or 5th. Any turbo is going to have some lag, but if the Variable Geometry Turbo in the 6.0 is working right, EGR is not sticking, the 6.0 will stomp all over these lesser powered motors. I would suggest selling a 6.0 for this lag feel might have been a big loss if youre VGT wasnt working right becuase you will have lost out towing with a beast that really works well!

72,000 Km, 30,000 pulling, still grinning and looking for the hills on my route!

 

Here is the explanation of why I would rev her out to 3500 rpm. I have a manual trans and there is roughly a 750 rpm drop between gears and then take into account the time to shift and you will see almost 1000 rpm drop between shifts. So I am at the bottom of a 6 + % grade from a full stop. Going up that grade I want to keep the engine at max torque so there is an easier load on the engine and it will be running in its sweet spot. Max torque for the 6.0 is 570 lb at 2000 rpm. Max hp is 325 at 3300 rpm. The torque will stay flat at 2000 rpm all the way to 3300 rpm and then hp and torque will drop off. So If I start off in 2nd gear (first is granny gear) and rev her up to 3500 rpm and then shift I will be around 2500 rpm after the shift and far into the sweet spot. This keeps the engine from lugging and keeps her happy. On the flats I can cruise easily at 1600 to 2000 rpm will little load on the engine. Also when shifting at the high rpm and staying in peak torque the shifts are very smooth and almost undetectable. This keeps my horses happy. Now I am done explaining myself.

 

Did we ever answer Krischacer's question?

 

I think it has been answered several times!

 

Did we answer his question. Man I got lost in the talk about the PSD, 5.4 ect.

A. Put all you goddies in you truck, fill up the tank and go get it weighed. Subtract that from your GVWR and that is what you have left over for tongue or 5th wheel hitch weight.

IE if your truck is rated for 9800 and it weighs 8500 full then you have 1300 for tongue weight.

B. Add the total weight of your truck with the 9100 of the trailer and that is the COMBINED weight. See if that exceeds the rated GCWR.

IE if the total of your truck is 8500 and the total of the trailer is 9100 then your COMBINED weight is 17,600. You will then need to see what the GCVW is to find if you are over or under.

I think Jim Henderson answered this above.

Although the TQ spot is 2200 rpms I find that the higher rpms do help on some of the hills.
There is no comparsion towing with a 5.4 and PSD.
Sorry had to add my $0.02

 

It's hard to stay away from that little comparison isint it!!

 

i am a big fan of the 5.4. it is a good engine and it will pull alot more than what alot of the deisel guys say. that being said it will not pull as good as a psd. i have used a 7.3l and it is a great motor, i have not towed with a 6.0l but i am pretty sure that they will both outperform a 5.4 when towing. i would still pick my 5.4 over a psd for the lower mait. cost, lower gas price, it is very reliable and i can work on it if need be, and it will pull 10,000lbs

 

--i am a big fan of the 5.4. it is a good engine and it will pull alot more than what alot of the deisel guys say. that being said it will not pull as good as a psd.

a lot of diesel guys get it in their head that as long as they have a diesel, no matter the set up, they can outpull anything on the road. simply because they have a diesel. and they laugh at the thought of even comparing a 5.4 to a psd. but take this "laugher" of a comparison. 1997 reg cab psd, auto, 3.55 gears vs 2008 reg cab 5.4, manual, 4.10 gears.

1997 psd has 425 lbs of torque. with the auto you lose 18% of power to the rear wheels. 425-18%=349 lb torque at rear wheels.

2008 5.4 has 365 lbs of torque. with the manual you lose about 10%. 365-10%=329 lbs torque at the rear wheels. only a 20 lb difference from the psd. the difference in gearing will make up quite a bit of that 20 lbs too. and having that extra gear in the manual tranny helps a ton too. THEN throw a crew cab dually on that psd and its still going to out pull the reg cab 5.4?? equally mated the psd will out pull the 5.4 any day of the week. but just having a psd doesnt mean you can outpull anything on the road. theres more to towing than just the engine.

virtually every question in the towing section where a guy asks can my truck tow this, about 10 guys write back, no, buy a diesel. even if the guy only has a 5k lb trailer. contrary to poplular belief, gas engines are in fact capable of towing more than a jet ski. and this guys 5.4 WILL handle his 9k lb trailer.

 

Don't forget to take into account the powerbands of the vehicles. There is a reason that a diesel is a better tow vehicle than a gasser. Don't get me wrong, I like the 5.4 and I think it is a good motor but for towing it goes hands down to a diesel.

 

Go back thru this thread and show me where anyone said the OP could not pull his TT with his 5.4. If someone ask opinions on what motor to buy to pull a certain trailer there will be a large percentage of diesel guys saying go diesel and never look back. There will be a gas vs diesel argument forever. Just because a 5.4 in a 08 can make close numbers to the first gen psd doesnt mean it will pull close to the same in real life. Again I say application matters. Each person has different needs for his/her pickup. If you live in hilly/mtns or are a flatlander that makes a difference. If you have to merge with traffic on a busy interstate or just need to get there and run 75mph.


This makes sense! When I have towed with my 5.4(I know its a 99 w/o the power of the 08s) it did fine at 55, but I live in open space w/ lots of hills. When I only have 8k to 10k on I like to set the cruise on 75 and go.

Everyone has different applications. Therefore you get a lot of different opinions. I dont think anyone doubts that the 5.4 is a good motor, capable of towing. It just doesnt fit everyones need. For example today I have to haul my backhoe(16k plus 9k trailer) down to CO. Running a 5.4 for that app. wouldnt make too much sense at all.

 

-- Go back thru this thread and show me where anyone said the OP could not pull his TT with his 5.4.

You want to pull 9000 pound trailer with a half ton gas pick-up? Wow that will suck!

With two horses, hay and tack it comes in around 7000lbs loaded. The 99 expedition seemed to be not enough truck for the trailer.

i havent read through every reply, but these are the first two that i found. i agree that for that 25k lb trailer you are pulling that a diesel would be a better fit. the durability of a diesel vs a gas is a no brainer. but no one "needs" a diesel for a 5-10k lb trailer. people have their preferences, which is fine, but to say a gasser wont pull it just isnt true and is giving people false information.

the best answer to any "will my truck tow my camper" question is simple.....hook it up and find out. take off for a 10 minute drive and you wont need our opinion lol. he already has the truck and trailer, so thats an easy answer to figure out. my answer would be different if he didnt have the truck and was looking to buy one. id recommend a diesel for many reasons, not just power. but no need in trading in a perfectly capable truck he already has.

 

If they are going to only pull it a few times in the summer it doesn't make much sense to purchase a diesel now does it?

 

Quote:
Originally Posted by phillips91 View Post
You want to pull 9000 pound trailer with a half ton gas pick-up? Wow that will suck!

If they are going to only pull it a few times in the summer it doesn't make much sense to purchase a diesel now does it?

this wasnt my quote. mudmaker told me to go back through the list and find an instance where someone said the guy cant pull 9k lbs with a gasser. the part that says wow, you want to pull 9k lbs with a gasser, that will suck. and the part about the expedition not being enough truck to pull 7k lbs were written by other people. i was just using their statements to show mudmaker why im defending the 5.4 here. go back and read my last line from my previous reply(the same one you misqouted me from). i clearly say "but no need in trading in a perfectly capable truck he already has." im the one defending the guys choice to use a 5.4 to tow his camper.

 

--Don't forget to take into account the powerbands of the vehicles. There is a reason that a diesel is a better tow vehicle than a gasser.

thats true on the old push rod engines. my 5.0 bronco wouldnt pull itself up a hill unless it was turning more than 2500 rpm, which is about where its powerband starts. theres some hills i have to climb for work that i have to be turning close to 4k rpm just to make it up without a trailer. it doesnt hurt the engine to turn those rpms from time to time, but i wouldnt want to be towing with it because it would be like that the entire trip.

but the 5.4 is a totally different engine. its making 90% of its torque by 1k rpm. and according to ford, its the ONLY gas engine to have that claim. thats 315-320 lbs of torque at just above idle. i dare say my 7.3 isnt making that kind of torque at idle or even 1500 rpm because the turbo hasnt even started spooling up then.