You're holding a lot of parameters still to make that happen. In the real world it comes down to which makes the most average power during the run, just like I said in a recent post. The 7.3L will annihilate the 5.4L because you have to use your transmission to go through the gears and that will dictate engine speeds and average power.

 

sorry. theres were torque comes into play. if your running 5.13's then your speed is much slower boss hoss then my 7.3 running 4.11's

 

I think we violently agree. Especially about the Cummins

I suspect unloaded you would beat me no problem. Especially 0-60 mph. I've done enough drag racing to know slow.... and I am slow! Too much shifting going on and not enough pop in the top end.

But my truck wasn't made for running empty. Loaded up with weight you will pull me momentarily at the top of each gear... whenever you finally get there. The rest of the time (majority) I'll be laying down consistently good power that will let me walk away from your 5.4L. It will become more noticeable as I get into 3rd and 4th gear which gives me longer legs to run. I can run up to 70 mph in 4th gear (5th if you count Low). How much faster do you need to go anyway? Between the two of us I'm the only one that could hold 5th gear on a hill. And I'll stop for fuel about 1/2 as much, too.

 

I wasn't talking about rear-end ratio, I was referring to transmission gear selection.

Do you have the power curves for a 5.4 and a 7.3? You would have to compare them to figure out whether this would be true or not.

That is meaningful only from the standpoint of comfort, but not power or towing ability. Again, the 5.4 is meant to produce it's power at higher rpms, so you wouldn't want to have it in 5th going up a hill.

I hope no one thinks I am running down 7.3's here. Look in my sig line, I own one, and I love it. But it does have limitations.

 

im talking getting up the hill faster with a good load on the truck. it doesnt matter what kinda hp your getting outta your 5.3l because like you said. you need those high rpm's were as with the 7.3 your running much lower rpms. so if you wanna run in 5th gear you need a low gear in the caboose or leave it in a lower gear with your normal gearing! either way your speed decreases.

 

It is amazing how this thread continues to stun me !!!!


Bench Racing as an art form..... The BEST science fiction pales in comparison to this thread


it is entertaining, but scary that some of your votes count the same as mine

 

Fuel is part of the equation-not the entire source for the power gain.
Pour all that fuel into the engine without adding air via MORE BOOST and see what happens. The same thing happens with force induction on a gasoline engine.
JL

 

I just think it is funny how the newest V10 keeps getting compared to the oldest psd!


You guys can try to crunch numbers all day long, but until you actually have real world results they are useless as far as I can tell. I know guys have said a V10 will last for a long time, but is it still making good power at 200k or is it just merely running still in need of an overhaul?

I use my pickup everyday to make a living. For me the economics of the V10 just don't add up. Mileage difference even on a bad day for me is substantial. Add the fact that I love the way the psd runs and drives made it an easy choice to spend an extra 5k when I ordered my 02, which is my 4th psd and 6th 7.3.

I think much of this paper debate is between guys that don't use your pickups to make a living. If I only used my pickup on the weekends to go camping or make a run to home depot I would probably have a V10.........I take that back I would still have a psd!!

 

Did anyone notice that when the PSD VS V10 discussion stalled, the diesel crowd decided to beat up on the 5.4? Amusing...and a lot of less than accurate postulating to boot, from both sides. And a lot of this going on: Things are looking good for biggest thread ever......


“It is usually futile to try to talk facts and analysis to people who are enjoying a sense of moral superiority in their ignorance.” — Thomas Sowell

 

If only they put that 12V into something worthwhile instead of a Dodge I might have considered one...

If a diesel doesn't have black smoke or any noticeable exhaust coming out, then there is air that wasn't used because all the fuel was mixed and combusted. A diesel engine is just a big air pump that will mix anything you shoot into the cylinder to mix with it. The skinny pedal doesn't adjust the air flow (no throttle body), just the fuel flow controlled by the computer. By adding fuel you can take advantage of that unburned air without having to add more air. You "overfuel" when you add more fuel than air to mix with, hence the offensive "black smoke". You can turn up the wick and produce more boost, but the stock turbos don't take to too much more boost without reliability consequences (and you start getting SES lights and codes).

Why argue with somebody your own size when you can pick on the little guy .

It seems fairly apparent that the gas guys love their high-revving, huge-torque-at-the-rear-wheels gas trucks and the diesel guys love their smelly, loud, slow inferior diesel trucks (and I thought I was over-compensating for my small willie...boy was I wrong ).

While we all agree to disagree on what looks and works best under the hood, we all have Superduties and support the only American auto manufacturer to not be going out of business or be under any government control.

Not to mention that Ford made a profit last quarter too so the're going to be around for awhile, maybe even as long as this thread will!

 

Quote:
Originally Posted by alchymist
Did anyone notice that when the PSD VS V10 discussion stalled, the diesel crowd decided to beat up on the 5.4?


I didn't !

I laugh equally at the claims made by the gassers !!!

And have offered, invited, cajoled, ANY and all to come do a 'comparison' ....

Have 3 empty bedrooms, 6 flags is here, Water parks, drag strips, oval tracks, gun ranges within 10 minutes....(IF you are driving a deezle, otherwise may be 40 minutes)

 

If I had a V10 and the time, believe me I'd be there.

Since I have a 6.4, but no time at the moment I can't get down to see Bill either...

But I get down there with my work truck often, so how 'bout this:

I weigh my work truck with whatever's in it at the time, and you add weight to yours to make it weigh the same. Then we pull some hills and make some comparisons. Sound fair?

 

You mean you missed the part where someone wrote up a nice mathematical comparison between a 2000-2004 2-valve V10 and a 2008 6.4L diesel?

 

What about the "test" pickuptrucks.com did that showed the 6.4L beating the V10 with the V10 gaining speed, on a very short track. That's kind of real world, they did it with and without a trailer. Wouldn't the V10 have continued to gain speed and if the "track" were more than 1/8 or 1/4 mile the 6.4L would have been passed? If I don't post again for a little while it's because I use my truck to line the bed with plastic, fill with water and drive bikini-clad hot chicks around town.

 

First you have to prove it here on the internet.....

but need some stout formuli - I only studied Chemucal Engahnerin in cullege - and do dat Systems Analysis on dem puters so i may not unnerstan


come on down - it's fun to play