Gas vs PSD
FTE Leadership Emeritus
Joined: Sep 2000
Posts: 7,298
Likes: 45
From: Southern California
Well yes, you are correct. But my question had nothing to do with your choice of engine. 50 years ago engines with 120 horspower were pulling the same weight you have and a lot more. They just had the axles, chasis and gearing to do it safely. Your photo looks like your rear axle is overloaded and you have no weight on your steering axle.
In any case, what does your overweight axle have to do with a V10 vs PSD thread?
In any case, what does your overweight axle have to do with a V10 vs PSD thread?
You must be driving gaser 
The truck pulled the weight just fine and I drove the I15 from Vegas to LA where there is a famous grade with lot of spots with burned asphalt on the shoulder.
The only problem the set has is weight distribution. While the truck has long rear overhang, the trailer has long front overhang. That puts most of the weight on the coupler. Now with air helper bags and excavator put couple feet towards the back of the trailer , I can fly
The truck pulled the weight just fine and I drove the I15 from Vegas to LA where there is a famous grade with lot of spots with burned asphalt on the shoulder.
The only problem the set has is weight distribution. While the truck has long rear overhang, the trailer has long front overhang. That puts most of the weight on the coupler. Now with air helper bags and excavator put couple feet towards the back of the trailer , I can fly
Postmaster
Joined: Apr 2006
Posts: 3,524
Likes: 2
From: CA Bay Area
Torque is not everything to get you to final destination.
We are comparing several PSD here, but fact is that the 7.3 liter that is on the market for 13 years still has no competition in reliability and longevity.
We are comparing several PSD here, but fact is that the 7.3 liter that is on the market for 13 years still has no competition in reliability and longevity.
Postmaster
Joined: Apr 2006
Posts: 3,524
Likes: 2
From: CA Bay Area
Suppose those engines have been on drawing boards during WW2 and still in some places are running strong.
Lead Driver
Joined: Jul 2007
Posts: 7,868
Likes: 9
From: Rhode Island
7.3 PSDs were only on the market between 1995 and 2003. 8 years.
Elder User
Joined: May 2010
Posts: 650
Likes: 0
From: WV
Yes actually, the V10 is about 400-500 lbs lighter than the PSD. Remember the conversation about diesels requiring stronger parts, those stronger parts have more weight to hand the higher compressive forces of the diesel.
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Elder User
Joined: May 2010
Posts: 650
Likes: 0
From: WV
Yes, so they have been out for almost 15 years. And since they were based on an already existing medium duty truck engine, their design is way over 20 years old. Comparing them to the most recent Cummins that was designed only a few years ago is kind of silly, of course the newer engine will be better.
I think by market he means new and used markets.
I think by market he means new and used markets.
Elder User
Joined: May 2010
Posts: 650
Likes: 0
From: WV
Thanks, but I had PSD. I just have no need for one at the moment. As I already said, the $7k for a PSD looks far better in my 401k than sitting in my driveway depreciating away.
Elder User
Joined: May 2010
Posts: 650
Likes: 0
From: WV
While that is true, when you have lots of weight, torque is what you need to keep moving. Of course you have to combine that with gearing and many other things, including hp's.
Posting Guru
Joined: Oct 2009
Posts: 2,066
Likes: 4
From: Rogue River, Oregon
Well then what is your criteria for a great engine? Whatever it is, the 6.7 Cummins performs better. And if longevity is all you're worried about then why not get a flathead Ford? They've been around since 1932,so by your method it must be the best engine ever!
Posting Guru
Joined: Oct 2009
Posts: 2,066
Likes: 4
From: Rogue River, Oregon
While that's true, my point was that while he may get all excited owning a diesel, they aren't the only thing out there. I've driven 6.0 and 6.4 Fords and 5.9 and 6.7 Cummins Dodges so I do know exactly what they are capable of, yet I still own a V10 Ford by choice, not because I'm some uninformed idiot.