Gas vs PSD
Postmaster
Joined: Apr 2008
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From: Rogersville, TN
Let me know what you find. There is a place on my way to work that is called Central Scale, but it is nothing more than a small building. No scales or anything in the parking lot. Greeneville isn't as far away as Knoxville, but it is still about an hour from here one way. Close to Kingsport or Bristol would be the easiest for me.
Super Moderator
Joined: Aug 2003
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From: Isanti, MN
What I meant is that at 3,000 rpm I would be going slower than him. He had reached his max pulling ability and was not going to go any faster. Even if you shut mine off at 3,300 rpm I would still be making enough power to pull another 300 rpm over the 3,000 he was turning. According to an online mph from wheel rpm/gearing calculator at 3,000 rpm he should have been going 28 mph. At 3,000 rpm I should be going 24 mph. Not a huge difference. If I pull another 300 rpms, at 3300 rpm I will be going 26 mph. That is the exact same speed he climbed the hill at and why I said I would climb it at the same speed as him. I would have to turn more rpms, but putting that much more power to the ground than he was, I shouldn't have any trouble squeezing a few more rpms out.
Originally Posted by phillips91
We also have to take into account that if his tc wasn't locked up, he was going to be turning more rpms than he normally would at that same speed. Remember the 5.4 in the test that you said was turning 5k rpm but only doing about 10 mph?
When we first came to this, I was surprised Matt agreed to it. Being overloaded by at least 1,000 lbs, I honestly had my doubts as to whether or not his truck would be able to get going on such a hill. To our surprise, his 5.4L engine was able to slowly gain headway, and nearly top out 1st gear at 25 MPH for the majority of the grade. Upshifting was out of the question, but it was able to start over 15,000 lbs on that kind of grade and move it upwards at a respectable pace.
Postmaster
Joined: Apr 2008
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From: Rogersville, TN
The stock torque converter wouldn't allow nearly that much slippage! This is one case where the auto has the advantage. Because of the way a torque converter operates it's able to multiply torque. This is possible because the input shaft is turning faster than the turbine shaft in the torque converter. This has the same effect of a reduction gear similar to a differential. This is also why Mike's truck stopped accelerating once the torque converter locked. It lost that multiplication advantage!
Super Moderator
Joined: Aug 2003
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From: Isanti, MN
We only had 9500 lbs trailer weight for the first one. 1,000 lbs lighter than the time we took the videos. 1,800 lbs lighter than Mike's V10 truck with the extra 800 lbs he was carrying.
Postmaster
Joined: Apr 2008
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From: Rogersville, TN
That makes sense then. I remember it only reaching about half the speed the v10 did, but with less weight the speeds were probably a lot faster for both of them on the first get together.
Super Moderator
Joined: Aug 2003
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From: Isanti, MN
Yeah, the first time we had roughly 9,500 lbs. Second was around 10,000 and the third was roughly 10,700.
If I remember right the speed difference between Mike's V10 and the F150 weren't that far apart, but the V10 certainly had an easier time with the load. As heavy as we were the last time I'm confident the F150 wouldn't have been able to get going.
If I remember right the speed difference between Mike's V10 and the F150 weren't that far apart, but the V10 certainly had an easier time with the load. As heavy as we were the last time I'm confident the F150 wouldn't have been able to get going.
Junior User
Joined: Jan 2010
Posts: 94
Likes: 1
From: peru,il
used to heli coil alot, and I MEAN ALOT of spark plug threads in them engines. not a fan of em or their little sister the 5.4,4.6 will take the 7.3 psd anyday
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More Turbo
Joined: Jan 2010
Posts: 680
Likes: 2
From: Las Vegas, Nevada
Just thought I'd throw this out there.
Before seeing this thread, everytime i would see a SuperDuty with a gas
motor in it, i would think to myself "What a waste".
But after reading on here, i have alot more respect for the 6.8L and 5.4L. They seem to be great gasoline engines and still get the job done at the end of the day.
But, You know which one I'm still siding with.
I'll start the chaos again.
My 7.3 will smoke your V10 anyday and leave you eating the black smoke.
Before seeing this thread, everytime i would see a SuperDuty with a gas
motor in it, i would think to myself "What a waste".
But after reading on here, i have alot more respect for the 6.8L and 5.4L. They seem to be great gasoline engines and still get the job done at the end of the day.
But, You know which one I'm still siding with.
I'll start the chaos again.
My 7.3 will smoke your V10 anyday and leave you eating the black smoke.
Postmaster
Joined: Apr 2006
Posts: 3,524
Likes: 2
From: CA Bay Area
Well gas engines are great for racing, but when Hummers become available for private ownership, the new generation with gas engines were used on raids in Mexico.
Bad part was that gas engines didn't make it between fueling stops
I wonder how long it is going to take for this thread to reach 5 digits count?
Bad part was that gas engines didn't make it between fueling stops
I wonder how long it is going to take for this thread to reach 5 digits count?
Thread Starter
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Modular motor junkie
Joined: May 2009
Posts: 6,190
Likes: 8
From: Texas
Just thought I'd throw this out there.
Before seeing this thread, everytime i would see a SuperDuty with a gas
motor in it, i would think to myself "What a waste".
But after reading on here, i have alot more respect for the 6.8L and 5.4L. They seem to be great gasoline engines and still get the job done at the end of the day.
But, You know which one I'm still siding with.
Before seeing this thread, everytime i would see a SuperDuty with a gas
motor in it, i would think to myself "What a waste".
But after reading on here, i have alot more respect for the 6.8L and 5.4L. They seem to be great gasoline engines and still get the job done at the end of the day.
But, You know which one I'm still siding with.
Now, stock to stock......
Junior User
Joined: Jan 2010
Posts: 94
Likes: 1
From: peru,il
whats the fuel milage you get outta your v-10, yeah I used to work at a machine shop, engine rebuilding shop, and like the first couple of years of them and the 5.4, 4.6 they used to blow spark plugs out, always the back ones on the v-10 for some reason, but eventually they put more threads on em and it fixed it.
also was not a big fan of the overhead cam design engines, will take push rods any day over em
also was not a big fan of the overhead cam design engines, will take push rods any day over em