Gas vs PSD
Cargo Master
Joined: Jan 2005
Posts: 2,413
Likes: 11
Oddly enough, my wife says I drive my F250 like an old man, and I suppose that's true. I know full well it's not a race car, it doesn't like the twisties AT ALL and it's also gotta last me a long time since I can't afford to break it. Having said that, there's a hill near my house that starts with a 30 mph corner and goes up at about a 9% grade for maybe 1/3 of a mile, give or take. For whatever reason I sometimes get all giggly crawling around the bottom turn at the legal limit, then getting after it up the hill. My '88 GT 5.0 Mustang will crest the top at about 75 mph if I hit the bottom at 50 mph, and the F250 will crest it at 70 even going slow at the bottom. Think about that, here's a big, heavy truck nearly matching a hot rodding icon. Now I'll be the first to admit a good diesel would likely top that speed, and if even a mild corner were in that hill ANY car would eat it alive. Childish and immature? Yep. But it's still fun!
Cargo Master
Joined: Jan 2005
Posts: 2,413
Likes: 11
He's not criticizing you, just stating facts. The rev limiter will be set at or below the maximum rpm the engine can safely turn. The red line indicated on the tach is often lower than the true limit of the engine. Unless you hit the rev limiter during your drive (which you didn't), you were not at the engine's true "red line." Even automatics will turn the engine higher than the indicated red line on some vehicles.
I was asking for break cause I made a false statement and as always I'll backup what I say or admit I was wrong. Do we need to argue the engines redline. I thought everybody knew what a rev limiter was. Kinda self explainitory. Ford has only been using em for 41 years that I know of.
Thread Starter
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Modular motor junkie
Joined: May 2009
Posts: 6,190
Likes: 8
From: Texas
Crown Victoria Police Interceptor.
Posting Guru
Joined: Aug 2008
Posts: 2,313
Likes: 0
From: Sunny, Snowy, CO
100,000 wanting to see you blow up your other V10...
Reality is the same 50-60 people posting again and again...
Reality is the same 50-60 people posting again and again...
Laughing Gas
Joined: Mar 2009
Posts: 843
Likes: 6
From: Jessup, PA
None of em I've driven will. Aight then where's that leave us now. I have pictures tag receits, tags, loan papers of the trucks and mustangs I've owned since 1998. I can prove I've owned them. None. Not the 1st one would rev past 5k. Tomorrow I'm gonna try to make video of our 07, and 10, mustang my wife's 04 f f150rpms. I can show ya better than I can tell ya.
YouTube - Ram 1500 out-tows the Ford F-150
I don't think the new F150 went past 3900 rpm at WOT. After watching the video, it seems to me that the computer was limiting the F150 to not downshift and go at higher rpms.
The dodge was WOT in 2nd gear (1.50:1) at 4400 rpm.
What you do and everyone else think?
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Hotshot
Joined: Mar 2007
Posts: 10,101
Likes: 40
From: Pa
That Platinum 150 should have had the 6speed in it, thus reducing the chance of being stuck between gears. That said at 3500-3900 rpm its possible the stock tuning was not allowing the trans to knock down a gear however with the 6 speed the rpm difference wouldn't be as much as the 4 speed. Did they mention gearing differences at all? Ford liked to put those 3:55s in the 150. The 5.7l in the Dodge does have a noticeable horsepower advantage and was able to downshift to second.
i ain't rite
Joined: Mar 2005
Posts: 65,605
Likes: 5,629
From: Marlboro Mental Hospital.
I found this video that may help make your point of some modulars not being able to go over 5k rpm. It's not of a SD, but it may help.
YouTube - Ram 1500 out-tows the Ford F-150
I don't think the new F150 went past 3900 rpm at WOT. After watching the video, it seems to me that the computer was limiting the F150 to not downshift and go at higher rpms.
The dodge was WOT in 2nd gear (1.50:1) at 4400 rpm.
What you do and everyone else think?
YouTube - Ram 1500 out-tows the Ford F-150
I don't think the new F150 went past 3900 rpm at WOT. After watching the video, it seems to me that the computer was limiting the F150 to not downshift and go at higher rpms.
The dodge was WOT in 2nd gear (1.50:1) at 4400 rpm.
What you do and everyone else think?
i think dodges are junk trucks, and built by a junk company. and that is why i will never own one again.
the last good dodge i drove or rode in was my 66 W-300
Laughing Gas
Joined: Mar 2009
Posts: 843
Likes: 6
From: Jessup, PA
FORGET ABOUT THE CONTENST. I DIDN'T POST IT AS A DODGE VS FORD ARGUEMENT! I'm asking opinions on Exile point of some modulars limited under 5k rpms.
I posted to show ford towing rpms at WOT.
The ford 6sp has a 1.52:1 3rd ratio and the dodge has a 1.50:1 2nd gear ratio. So if the ford would have downshifted to 3rd (1.52:1) it would have been somewhere near 4400 rpms just like the dodge. Dodge had a 3.92 rear. I don't know what the ford had.
I thought maybe this would help Exile in making point.
I posted to show ford towing rpms at WOT.
The ford 6sp has a 1.52:1 3rd ratio and the dodge has a 1.50:1 2nd gear ratio. So if the ford would have downshifted to 3rd (1.52:1) it would have been somewhere near 4400 rpms just like the dodge. Dodge had a 3.92 rear. I don't know what the ford had.
I thought maybe this would help Exile in making point.
Super Moderator
Joined: Aug 2003
Posts: 25,479
Likes: 742
From: Isanti, MN
I found this video that may help make your point of some modulars not being able to go over 5k rpm. It's not of a SD, but it may help.
I don't think the new F150 went past 3900 rpm at WOT. After watching the video, it seems to me that the computer was limiting the F150 to not downshift and go at higher rpms.
The dodge was WOT in 2nd gear (1.50:1) at 4400 rpm.
What you do and everyone else think?
I don't think the new F150 went past 3900 rpm at WOT. After watching the video, it seems to me that the computer was limiting the F150 to not downshift and go at higher rpms.
The dodge was WOT in 2nd gear (1.50:1) at 4400 rpm.
What you do and everyone else think?
It'll hang at redline all day long, but the speed and load have to line up so that it's possible. When we did the towing comparison and included my dad's 3V 4.6L F150, I was able to hold 6,000 RPMs in first gear as long as I wanted to. Upshift to 2nd on a 15% grade with a 10,000 lb trailer and it couldn't hold speed at 4,000 RPMs. Back down to 1st and 5,500-6,000 RPMs it went.
The computer will not limit downshifting as long as the RPMs are in the acceptable range. The 4.6L has a shorter stroke, and revs higher.
That Platinum 150 should have had the 6speed in it, thus reducing the chance of being stuck between gears. That said at 3500-3900 rpm its possible the stock tuning was not allowing the trans to knock down a gear however with the 6 speed the rpm difference wouldn't be as much as the 4 speed. Did they mention gearing differences at all? Ford liked to put those 3:55s in the 150. The 5.7l in the Dodge does have a noticeable horsepower advantage and was able to downshift to second.
Laughing Gas
Joined: Mar 2009
Posts: 843
Likes: 6
From: Jessup, PA
I believe the 5.4L redlines just north of 5,000 RPMs; downshifting from 3,900 RPMs might have put it over that. The PCM will NOT allow a downshift to over-rev the engine.
It'll hang at redline all day long, but the speed and load have to line up so that it's possible. When we did the towing comparison and included my dad's 3V 4.6L F150, I was able to hold 6,000 RPMs in first gear as long as I wanted to. Upshift to 2nd on a 15% grade with a 10,000 lb trailer and it couldn't hold speed at 4,000 RPMs. Back down to 1st and 5,500-6,000 RPMs it went.
The computer will not limit downshifting as long as the RPMs are in the acceptable range. The 4.6L has a shorter stroke, and revs higher.
The horsepower advantage is the biggest factor, here. The Ford was out-matched by 80 horsepower; it's like comparing a 6.0L PSD to the new 6.7L PSD. Or the NPI 2V V10 to the 3V V10!
It'll hang at redline all day long, but the speed and load have to line up so that it's possible. When we did the towing comparison and included my dad's 3V 4.6L F150, I was able to hold 6,000 RPMs in first gear as long as I wanted to. Upshift to 2nd on a 15% grade with a 10,000 lb trailer and it couldn't hold speed at 4,000 RPMs. Back down to 1st and 5,500-6,000 RPMs it went.
The computer will not limit downshifting as long as the RPMs are in the acceptable range. The 4.6L has a shorter stroke, and revs higher.
The horsepower advantage is the biggest factor, here. The Ford was out-matched by 80 horsepower; it's like comparing a 6.0L PSD to the new 6.7L PSD. Or the NPI 2V V10 to the 3V V10!
Hotshot
Joined: Mar 2007
Posts: 10,101
Likes: 40
From: Pa
The ford 6sp has a 1.52:1 3rd ratio and the dodge has a 1.50:1 2nd gear ratio. So if the ford would have downshifted to 3rd (1.52:1) it would have been somewhere near 4400 rpms just like the dodge. Dodge had a 3.92 rear. I don't know what the ford had.