Gas vs PSD
Elder User
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From: Spokane, WA
Cargo Master
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My 7.3 has a manual with the same gear ratios as my 5.4 and turns half the rpms. The 7.3 makes peak tq at 2,000 rpm, not 1,600 and the 5.4 makes peak tq at 2,500 rpm and not 3,800. You also have to remember that even if it had an automatic (which it doesn't), the tc is only multiplying the tq for a very short period of time. It doesn't multiply it all the way through the entire gear. By the time my 5.4 hits 4,500 rpm (303 tq) my 7.3 has shifted to 2nd and is at about 2,000 rpm (425 tq with a 2.93 ratio). Those numbers are 1727 for the 5.4 and 1245 for the 7.3. That is why I said that as soon as my 7.3 shifts to 2nd the 5.4 runs it down and passes it in a hurry.
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From: Isanti, MN
Cargo Master
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Super Moderator
Joined: Aug 2003
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From: Isanti, MN
Thread Starter
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Modular motor junkie
Joined: May 2009
Posts: 6,190
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From: Texas
I never said HP was all that matters.
Elder User
Joined: Apr 2009
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From: Spokane, WA
Haha, how many times did you say the 3v v10 will outpull the 6.4 because of the 12 hp advantage or whatever. LOL
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Modular motor junkie
Joined: May 2009
Posts: 6,190
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From: Texas
But I don't.
Give a 3V a 4R100 and 3.73s and its not going to out pull a 6.0.
With the 4.10s and Torqueshift that came in the 05+ trucks, it will.
12 HP will not make up for a crappy tranny though.
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Joined: Feb 2010
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The world isn't flat, and I'm carrying on. I like this thread, it's the equivalent of a "What oil/tire thread" on a motorcycle board.
I bought my V10 for a simple reason. It (like the two trucks before it) are "third" vehicles, not a daily driver. As a result, it doesn't get driven much, and rarely unless it's pulling something.
It's fuel consumption sitting in the driveway is virtually identical to a PSD sitting there. What is different, is that the V10 only costs more when I'm driving it. The PSD was going to cost more at purchase, and based on my limited mileage I'd have to keep the truck something ridiculous like 20 years to break even.
I really wanted a PowerStroke, but simply couldn't justify it based on my annual mileage.
Sorry to be so boring and practical.
I bought my V10 for a simple reason. It (like the two trucks before it) are "third" vehicles, not a daily driver. As a result, it doesn't get driven much, and rarely unless it's pulling something.
It's fuel consumption sitting in the driveway is virtually identical to a PSD sitting there. What is different, is that the V10 only costs more when I'm driving it. The PSD was going to cost more at purchase, and based on my limited mileage I'd have to keep the truck something ridiculous like 20 years to break even.
I really wanted a PowerStroke, but simply couldn't justify it based on my annual mileage.
Sorry to be so boring and practical.
