Gas vs PSD
Postmaster
Joined: Apr 2008
Posts: 4,724
Likes: 4
From: Rogersville, TN
I actually meant from a dead still, or going down the highway like in the ram and Ford video. Will your 5.4 take off and leave it? I'm not taking on paper or trick work outs. Just simple nose to the ground back breaking work. Why I ask is because depending on what year and what unit its put in the HP where fairly close between the 2. The overwhelming difference is the 7.3's tq. Not getting on the tq kick I just don't know what 5.4
Cargo Master
Joined: Jan 2005
Posts: 2,413
Likes: 11
So once they get going down the road a piece tje 7.3 regains the strong side. Are you saying your 5.4 is stronger, walking off 12-25 mph then tapers off. Is that saying the 7.3 has the upper hand under 12 and over 25?
Thread Starter
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Modular motor junkie
Joined: May 2009
Posts: 6,190
Likes: 8
From: Texas
Chargersfan, you must have missed this both times I said it.
Its been three days, and all I want is a simple yes/no.
Its been three days, and all I want is a simple yes/no.
Postmaster
Joined: Apr 2008
Posts: 4,724
Likes: 4
From: Rogersville, TN
No, the 7.3 has the advantage from 0-12 and then from 12-whatever the 5.4 has the advantage. From 0-12 they are in the same gear at the same rpm, so the 7.3 has the advantage. After that, the 5.4 is always one gear lower and turning more rpms. Once my 5.4 passes it, the 7.3 isn't catching back up. From a line them up and go, top the hill the fastest, 0-60 or any comparison involving nothing but power I would take the 5.4 any day of the week. That is pulling the same trailers on the same hills on the same day.
Posting Guru
Joined: Aug 2008
Posts: 2,313
Likes: 0
From: Sunny, Snowy, CO
yes/no; happy? They don't run every engine up that way. If they did, then you bought a used engine in your new truck. Do you understand that? yes, or no? You may have 2 "Friday Engines" for all you know. I can see (for instance) an Eco-Boost being pulled off the line and being repeatedly dogged in different tests. I would hope it passed as it's brand new. I'd like to see them take one that's been driven by Billy Bob Redneck for 5 years and do the same test. 10:1 says it would blow up. Are you under the severely misguided belief that EITHER of your V10's is as strong and stable as it was the day it rolled off the assembly line?
FTE Leadership Emeritus
Joined: Jul 2002
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From: Long Island USA
You can PM me directly if you want to know what I meant.
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Cargo Master
Joined: Jan 2005
Posts: 2,413
Likes: 11
No, the 7.3 has the advantage from 0-12 and then from 12-whatever the 5.4 has the advantage. From 0-12 they are in the same gear at the same rpm, so the 7.3 has the advantage. After that, the 5.4 is always one gear lower and turning more rpms. Once my 5.4 passes it, the 7.3 isn't catching back up. From a line them up and go, top the hill the fastest, 0-60 or any comparison involving nothing but power I would take the 5.4 any day of the week. That is pulling the same trailers on the same hills on the same day.
Hotshot
Joined: Dec 2003
Posts: 18,423
Likes: 9
From: iowa
FWIW, my SD 7.3 scab long box 4x4 came across the scale this week at 7500
Senior User
Joined: Sep 2004
Posts: 116
Likes: 0
David I'm going to combine both my replies here cause I'm on mobile and haven't figured out how to put more than 1 quote in a post.
I've defended the 5.4 and the 6.8. I've strived very hard to prove that my psd has it's mark in the towing world and that neither gasser will out tow my psd. This is very hard for me cause I'm pretty dumb and even dumber with words.
I believe I was the first to say that the badges could be seen. Not a gasser. Unless a post slipped in while I was typing. I try to keep everything 1:1 as possible. I try very hard to correct my mistakes and things that I've said that was wrong or explain myself better. I don't see you exposing your self doing math problems or making video to support what you say.
I left the axle out because the engine and tranny in the 2 trucks is unchangeable. I don't know if you could order the 4.10 in the 6.4, but you could most certainly put it in after buying the truck. What's says you now. I have 4.11 in my truck. In 04 you had a quite a few rear gears to chose from.
The 1 thing that nobody points out about tractive force is that when we start out I'm working in my max tractive force. Its very easy to achive. The gasser has to rev up to or dump the brake or clutch in his powerband. We know what will happen. He'll either lunge and slip when he jerks the trailer or slip as soon as the power is sent to the rear. Which means - tractive force. This formulas is meant to find the maxium pulling power a system CAN reach. It doesn't mean it WILL reach it.to many factors hinder it.
I've defended the 5.4 and the 6.8. I've strived very hard to prove that my psd has it's mark in the towing world and that neither gasser will out tow my psd. This is very hard for me cause I'm pretty dumb and even dumber with words.
I believe I was the first to say that the badges could be seen. Not a gasser. Unless a post slipped in while I was typing. I try to keep everything 1:1 as possible. I try very hard to correct my mistakes and things that I've said that was wrong or explain myself better. I don't see you exposing your self doing math problems or making video to support what you say.
I left the axle out because the engine and tranny in the 2 trucks is unchangeable. I don't know if you could order the 4.10 in the 6.4, but you could most certainly put it in after buying the truck. What's says you now. I have 4.11 in my truck. In 04 you had a quite a few rear gears to chose from.
The 1 thing that nobody points out about tractive force is that when we start out I'm working in my max tractive force. Its very easy to achive. The gasser has to rev up to or dump the brake or clutch in his powerband. We know what will happen. He'll either lunge and slip when he jerks the trailer or slip as soon as the power is sent to the rear. Which means - tractive force. This formulas is meant to find the maxium pulling power a system CAN reach. It doesn't mean it WILL reach it.to many factors hinder it.
As far as math problems, I've posted a little (at least some equations), but I've done a lot more checking stuff. I'm not at all afraid to post stuff, but from my experience, when most people see lots of numbers, their eyes glaze over and they zone out until the next post anyway. Unless you want video from a Thunderbird with a 2V 4.6, I have nothing to offer there. I found this thread looking for info about the different engines.
I was really hoping that you would post the numbers including a rear end gear. Using those, the 5.4 would come out slightly ahead for peak torque in 1st, but not in other gears. But that was leading to another point, more about transmissions than engines, though. When comparing 1st in a manual to 1st in an automatic, people seem to leave out the torque converter and torque multiplying characteristic. I think multiplication peaks at stall speed and drops from there, but that is a big difference in getting a load moving initially. I think the converter multiplies 1.8x in the 5r100, which also happens to be roughly the ratio between 1st gears in the manual and automatic that is offered in these trucks. Coincidence?
Senior User
Joined: Sep 2004
Posts: 116
Likes: 0
If you're going to quote or paraphrase me, you need to get it right. I called BS on it because it was a LIE from the get go. Hook up the same trailer to a V10, and one to my 6.4, and that V10 is NOT going to pass me if I'm giving it all its got. After several other posts, it turned into the badges, but that was after the 3 "I can tell by the tailpipes" crap...Once I pointed out you can;t see the tailpipes if there's a trailer behind the truck, then it focused on the badges, and I still call BS on that. Mine look black sitting in my driveway. Of course, my truck is red though. If you fail to believe that, then look at the pic on my profile. Also, learn how to READ because the guy never said "they were 6.4 diesels". He said one was a 6.4 and the other a 6.0.
I think you had already pointed out the exhaust being hidden when I posted, or I would have. Even without a trailer, I think it would be hard to see.
As far as the badges, from the pictures of your truck, I think Ford put the wrong ones on yours. Either that or you have a gas truck with custom exhaust. Seriously, though, on most colors other than red, its easy to see the difference.
Senior User
Joined: Sep 2004
Posts: 116
Likes: 0
No, the 7.3 has the advantage from 0-12 and then from 12-whatever the 5.4 has the advantage. From 0-12 they are in the same gear at the same rpm, so the 7.3 has the advantage. After that, the 5.4 is always one gear lower and turning more rpms. Once my 5.4 passes it, the 7.3 isn't catching back up. From a line them up and go, top the hill the fastest, 0-60 or any comparison involving nothing but power I would take the 5.4 any day of the week. That is pulling the same trailers on the same hills on the same day.
Posting Guru
Joined: Aug 2008
Posts: 2,313
Likes: 0
From: Sunny, Snowy, CO
Seriously though, if the sun is at any angle other than right on them, it's not that easy to see. It's a plastic, 1/3" mesh so it's very susceptible to shadowing...We have very few gassers up here though (think altitude) so I haven't seen a true black one yet that I know of.