V10 vs psd

[jdadamsjr]

Originally Posted by bill11012 I keep it maintained, I just had a lot of weight and hit a long, steep hill. I heard an odd noise and the gears had a lot of slack and were way to hot when I stopped to check. I took the cover off 1 year ago and all was good. It had no slop, no wear marks nothing. It was like new until the hill i went up yesterday. pulin yer leg bill ----- all mine is teasing since even my wife won't take me seriously

[mongo75]

I've never heard of a dyno set up to "guesstimate" flywheel numbers. There may be, I just never heard of it myself. If there is, well, that's about a stupid as it can get.... I got a bridge I can sell to the guy that believes those numbers, on that kinda machine, are solid. And I'll selll it to a diesel or gas guy LOL!

[jdadamsjr]

I got the formula right here:

FLY HP = Seat-o-pants+2 times (#ofmods)Squared

[Ace!]

I'm so glad you posted that jdadamsjr, I had forgotten the forumla and no matter how many beers I drank I couldn't remember it!

[brian42]

Originally Posted by 78bigbronco

And for the money and extra complexity and such of the diesel...

No spark plugs, no throttle body, no distributor/coil, ...

Originally Posted by Sparky83

like for instance.. if i were to drive.. say 5-10 miles down the road.. which engines being hurt more from a trip that short?

The diesel gets the short end of the stick by far. Diesels were made to run, not do short hops. 5 miles and the truck isn't even up to normal temperature yet. Fine for gassers, bad for diesels (in the long run). Some short hops every now and then are okay, but I don't make a regular habit out of driving 2 blocks to the store in my rig (that's what my wife's SUV is for ).

Originally Posted by Ace!

See, I just don't get the RPM arguments. I can get a 20,000 lbs load rolling with a V10 or 5.4L truck, but maybe not as quickly. Is that the argument? If so, what about after it's rolling?

I never have a hard time getting to or hanging at the speed limit (my truck loves 1800RPM @ 62MPH). The only time I get passed is by the speeders, but I always catch (and pass) them on the next hill !

Originally Posted by Crazy001

Peak torqe can NEVER, EVER come at a higher RPM than peak HP!!!!

Brain42...ever hear of cut and paste?

Dang! My hands are dislexic too! Thanks for the upgrade, I'm a little woozy from all the diesel fumes.

Originally Posted by supeRobertduty

The 6.0 and 6.4 will be the Dark years in fords diesel history. The V-10 will be a legend as we look back at FORD's gas motor history.
Time will tell.

Funny, there are more 7.3L parts offered than I can afford! Heck, my dealer still has a poster for the old AIS filter system in the parts department. Diesels will always need fluids...and parts to keep the fluids from leaking out! And there will always be somebody willing to take my money for those parts, whether it's Ford, a shop, an aftermarket company or some generic brand from Autozone. If you can still buy parts for a Chevy Corsica (you old guys know what I'm talking about) then I'm not worried about getting parts for my rig.

Originally Posted by Krewat

Rear-wheel dyno numbers are ALWAYS way below the posted "flywheel" numbers for ANY vehicle.

In a truck, with big tires, heavy driveshaft, heavy tranny, etc, there's a huge loss between the flywheel and the ground.

And that's even before you get into HOW a rear-wheel dyno actually derives those numbers

With an auto tranny the drivetrain can soak up to as much as 30% of your power before it even hits the groud.

Originally Posted by mongo75

Either way I look at it, those are all pretty sad numbers compared to what everyone's preaching. I always refer to pay and trucks as to what you're left holding- what you bring home AFTER all deductions, and HP/TQ as what's put to the ground. I got mods, but I do like my 320hp/704ftlbs at the ground. And this was done on Johns Woods dyno, and if he ain't running a tight ship then I don't know who is.....

For $400 I can get a chip and, bam, I've got 400HP and 700+lb-ft of torque -- and then, bam, I'm writing a check for $4000 for a new transmission -- and then, bam, my wife serves me with divorce papers and a "I hope you and your truck are happy together". I think the stock power will do just fine for now .

Originally Posted by bill11012

I am in texas, but I tore up my rear diff, so I do not want to run it harder that I have to.
have you PSD guys ever broke a Dana 70?

The Old Body Styles (OBS) my have run the Dana 70, but the PSDs run a Sterling 10.50 (10.25 pre-2001 I think) and the duallies ran a Dana 80.

[brian42]

Originally Posted by jdadamsjr

I got the formula right here:

FLY HP = Seat-o-pants+2 times (#ofmods)Squared

Nice!

I've got to write that down right next to my blinker fluid capacity!!!

[Ace!]

Don't they use a higher grade of leather in the gas trucks?

[78bigbronco]

Originally Posted by Krewat

You mean like this one?

http://www.ford-trucks.com/forums/sh...d.php?t=829706

and


I think the difference is almost down to 'splitting hairs' between the two. Sure one may be the victor, but not by as huge a margin as many argue about. Its not like were talkin gold vs trash here... Ford Super Duties pushin hundreds of pounds of torque to the ground. Beyond that not very interested in who can beat who at a drag race by a couple seconds. Heck the folks on the farm here haul tractors and horse trailers around with a 2V 5.4 they just arent going to be breaking any records doing it.. except for the underdog record maybe

[indyF-350psd]

Originally Posted by bill11012

The V10 is trash talked by PSD guys so much that we just fight back in defense.
No matter how you look at it they come out the same for pulling and cost.
BTW, for the guys that say, well my PS will out last the V10, I can overhaul it for less then the cost of a turbo or an injector pump.

could you point out the injector pump to me? i seem to have forgotten where it is!

and if you can rebuild an entire V10 for 600 bucks you should go in the V10 rebuilding business.......

[bill11012]

I can overhaul a 2v V10 for $1000 Dollars worth of parts.
A turbo new costs about $800-1200

[mudmaker]

Originally Posted by bill11012

I am in texas, but I tore up my rear diff, so I do not want to run it harder that I have to.
have you PSD guys ever broke a Dana 70?

Must those high rpm's the V10 runs!

[78bigbronco]

I dont think engine RPM has any bearing on your diff. The only thing that will change the rpms of the diff is the gear ratio and tire size.

[EXv10]

Originally Posted by 78bigbronco

I dont think engine RPM has any bearing on your diff. The only thing that will change the rpms of the diff is the gear ratio and tire size.

That's right

[bill11012]

Originally Posted by 78bigbronco

I dont think engine RPM has any bearing on your diff. The only thing that will change the rpms of the diff is the gear ratio and tire size.

It had nothing to do with the motor at all.
The truck has a D60 ( 9.75 ring gear ) in it.
I was told that it was a D70 and never checked tell today.
I will replace it with a D70 or D80.
IT is in a E350 1 ton van and for some stupid reason ford gave it a V10, 4R100, towing package and 10,000 pound gvwr, 20,000 combined
WITH A D60!

[mudmaker]

Originally Posted by 78bigbronco

I dont think engine RPM has any bearing on your diff. The only thing that will change the rpms of the diff is the gear ratio and tire size.

Sure, but hasn't everyone been saying 4.30 gears are the best for V10's. That would mean that rear end is turning faster than a 3.73 at highway speed would it not.