Gas vs PSD
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Like I said, be happy with your gasser, I'll take my clacker any day.
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Posting Guru
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From: Sunny, Snowy, CO
True that...And my 6.4 has 3.55 gears and runs like a scalded cat!
Cargo Master
Joined: Jan 2005
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Its not the case here but 01-03 7.3L closed the gap to only been 35 hp under the 6.8L of the same yrs. I don't why Ford waited so late to try to get something out of them.
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Modular motor junkie
Joined: May 2009
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From: Texas
Those are great gears for an engine with low RPM peak torque and peak HP.
The 5.4 and 6.8 pull the hardest at higher RPM. Running the same gears as a PSD holds them under peak power, where they hold your engines right where they want to be.
Needing gearing to match the engines RPM range does not make them weak.
The 5.4 and 6.8 pull the hardest at higher RPM. Running the same gears as a PSD holds them under peak power, where they hold your engines right where they want to be.
Needing gearing to match the engines RPM range does not make them weak.
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Modular motor junkie
Joined: May 2009
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From: Texas
I don't think jumping to 4:30s is going to make that much of an impact. Everything equal taller gears=lower topend speed. Taller gears=higher rpms at same speed. He's still going to gear search in cruise. Only way around that is to WOT. Now the gas hand is going to race to the bottom mark. Its just the nature of the beast .
You start gaining speed you back out of the gas when you get to the speed you want and then its back to third. Then it wants to drop to second again when it starts loosing speed.
4.30s or even 4.56s would make third a much better pulling gear.
I have run 75 towing 10,000 lbs into a head wind, and it would hold it ok but the gear searching from third to second and back again was pretty bad.
It feels like it needs a gear inbetween.
The Torqueshift is a much better towing tranny.
I was talking about 4r100 V10 vs 4R100 7.3.
Postmaster
Joined: Apr 2008
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From: Rogersville, TN
Having a lot of low end torque just means you can do the same work in a higher gear and at a lower rpm. My 7.3 has a lot more tq than my 5.4, but my 5.4 will run off and leave it loaded or unloaded. It just isn't in the same gear or at the same rpm. Tq is important when pulling a load, but it's tq in the form of tractive force and not engine tq. Im still more than willing to get together and do some pulling any time you are up this way. Any other stock engines are more than welcome to come along too.
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From: Sunny, Snowy, CO
Postmaster
Joined: Apr 2008
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From: Rogersville, TN
I can be in 3rd(same gear ratio as his 2nd) and at 60 mph mine is turning 4,500 rpm. If I run it to 5,500 rpm I can get about 68 mph out of it. I have a 4.10 and Bill has a 3.73 in his, so I see no reason why he can't do 75 mph in 2nd gear.
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From: Sunny, Snowy, CO
How ya' been? You've been SLACKING as of late in your moderator input...at least on this thread....
Postmaster
Joined: Apr 2008
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From: Rogersville, TN
With all the horsies ya'll got, you shouldn't have to be in 2nd gear screaming along at 75mph....or, .75mpg.... the more laughter ya'll give me, the happier I am I bought a diesel...lol
How ya' been? You've been SLACKING as of late in your moderator input...at least on this thread....
How ya' been? You've been SLACKING as of late in your moderator input...at least on this thread....
I have been slacking a bit the past week. I had an unfortunate event happen at home that required me to spend some time in the emergency room, so I haven't been online much. I go back to the dr tomorrow to see if I am going to need surgery. If I do, you all may be hearing quite a bit from me as I am confined to the couch for about a week straight lol.
Posting Guru
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From: Sunny, Snowy, CO
We don't HAVE to run at those rpms, we are just saying our engines are capable of doing it. It's very rare that mine ever hits 4,000 rpm.
I have been slacking a bit the past week. I had an unfortunate event happen at home that required me to spend some time in the emergency room, so I haven't been online much. I go back to the dr tomorrow to see if I am going to need surgery. If I do, you all may be hearing quite a bit from me as I am confined to the couch for about a week straight lol.
I have been slacking a bit the past week. I had an unfortunate event happen at home that required me to spend some time in the emergency room, so I haven't been online much. I go back to the dr tomorrow to see if I am going to need surgery. If I do, you all may be hearing quite a bit from me as I am confined to the couch for about a week straight lol.
Sorry to hear your wife whupped your butt and put you in the emergency room. (kidding) Hope all turns out good
Postmaster
Joined: Apr 2008
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From: Rogersville, TN
Thanks. As of now it looks like everything is going to be ok. Just have to see if they will drop the charges against my wife
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Modular motor junkie
Joined: May 2009
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From: Texas
At 75, I'm over peak HP in second and under peak torque in third.
Its the trans and rear gears, not the engine.
It still pulled it fine, just hunted for gears more than I like it to.
I was driving into a head wind and I got 7.7 MPGs that trip grossing 18,000 lbs.
Its the trans and rear gears, not the engine.
It still pulled it fine, just hunted for gears more than I like it to.
I was driving into a head wind and I got 7.7 MPGs that trip grossing 18,000 lbs.