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tmayes
Dodge Dakota
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1/07/2009
14:22:21
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 Subject: CHanges in the 4.7
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Message:
Does anyone know for sure when the engine redesign took place in the 4.7. I have looked all over the internet and can't really find any straight answer. Some Used car dealer told me that they changed in 07, i just wanted to verify before I make a new buy. Thanks
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TexasTodd
GenIII
1/07/2009
16:24:05
|  RE: CHanges in the 4.7
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Message:
What part changed?
They hade made the 4.7 HO since way back.
They changed intake manifolds, Throttle bodies, PCM, etc. throughout the years, but, as far as I know, it's still the same motor. (the HO has different rods, and many other things).
01 SLT QC, two tone paint,
OEM fender flares
Cab high Leer cap w/ double slider window,
Infinity sound,
Tire and handling pack,
Trailer towing pack,
4.7 manual,
HO cams,
HO intake,
Ported the stock 68mm TB,
Homebrew 'true' CAI, w/ K&N
No belt driven clutch or cooling fan
No third cat.
SuperChips Tuner
Max dyno, NO short belts, etc.
227 RW HP
300 RW TQ
Drive it like its paid for!
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Josh
Dodge Dakota
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1/07/2009
20:34:08
|  RE: CHanges in the 4.7
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Message:
The 2nd generation 4.7L is available for model year 2008 and later. The body is ugly, but that engine rocks!
Drool over this!
http://allpar.com/mopar/47.html
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tmayes
Dodge Dakota
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1/07/2009
21:32:55
| RE: CHanges in the 4.7
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Message:
THanks for the help. I know that they changed the motor and it suppose to have like 70 + more HP and like 30+ ft/lbs of torque. Thanks for your help. I am upgrading to a fullsize with a 4.7 6spd 4x4 2007 quad cab.
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STS
Dodge Dakota
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1/08/2009
16:21:39
| RE: CHanges in the 4.7
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Message:
They should have had those engine specs 5 years ago. Made no since having a V8 with just 230HP when the computition had V6's or I5's that had just as much or even more.
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Kowalski
GenIII
1/09/2009
09:52:50
|  RE: CHanges in the 4.7
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Message:
We've pointed out your thinking error when making that nonsense claim in the past. Will you ever learn ? In a heavy truck, it's torque that means much more than horsepower for real world performance - the hauling and towing that makes a truck useful. The v6's and I5 don't have any where near the torque of the early 4.7. For a street truck, torque is the more meaningful way of comparing power.
Lead, follow, or get out of the way
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Steven Roark
Dodge Dakota
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1/09/2009
11:32:29
| RE: CHanges in the 4.7
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Message:
For once kowalski is right. Torque is what is needed in a truck.
4.7 ho had better internals over the non ho version.
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Dan M
Dodge Dakota
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1/09/2009
14:48:59
| RE: CHanges in the 4.7
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Message:
Also keep in mind the RPM range where the greatest torque is applied.
- Dan M
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Mreff555
Dodge Dakota
JOIN HERE
1/25/2009
11:07:05
|  RE: Changes in the 4.7
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Message:
STS is right. The low HP is a tradeoff for being able to tow a trailer without putting your engine speed much above 3000.
personally I'd like to have more power and actually know what 90 mph looks like in my truck, but the transmission is somewhat of a limiting factor. It's designed for towing, not speed.
Bottom line, if you want HP go buy a sports car. :)
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Kowalski
GenIII
1/26/2009
18:16:57
|  RE: CHanges in the 4.7
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Message:
No, STS is wrong, and you are too. Do you even have a 4.7 ? It doesn't sound like you have any idea what you are talking about. The 45RFE transmission behind mine will shift quite quickly and smoothly, and is essentially the same as the transmission in the SRT8 hemi Charger, Challenger, etc. And the 4.7 loves revs - lighter reciprocating internal mass than the old 5.2/5.9. Spins up quicker and revs higher. Let's keep it real here !
Lead, follow, or get out of the way
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TexasTodd
GenIII
1/27/2009
14:03:45
| RE: CHanges in the 4.7
IP: Logged
Message:
Yea, I read that comment about the tranny a few days ago, and almost said something.
And I'm STILL wondering from his post,
his truck won't do 90?
01 SLT QC, two tone paint,
OEM fender flares
Cab high Leer cap w/ double slider window,
Infinity sound,
Tire and handling pack,
R/T sway bars
Trailer towing pack,
4.7 manual,
HO cams,
HO intake,
Ported the stock 68mm TB,
Homebrew 'true' CAI, w/ K&N
No belt driven clutch or cooling fan
No third cat.
SuperChips Tuner
Max dyno, NO short belts, etc.
227 RW HP
300 RW TQ
Drive it like its paid for!
|
NJDodge
Dodge Dakota
JOIN HERE
1/29/2009
09:18:53
| RE: CHanges in the 4.7
IP: Logged
Message:
There is nothing like HP AND torque.
Example: My '99 Ram 5.9 245hp 335lb torque.
My '03 Ram 5.7 345hp 375lb torque.
Both Ram's with 4:10 LSD.
My '05 Dakota 4.7 230hp 290lb torque.
Not sure what rear is in it.
There was only a little over 10% increase in torque but whopping 40% increase in HP in the Ram's and the difference in towing was night and day. Anybody who has come down I-5 into L.A. knows the mountain pass you climb before heading into the valley. I was towing a car trailer with my Hemi and I went up that mountain 65-70 without even blinking. All the Powerstrokes and Cummins were chugging and snorting in the slow lane. My 5.9 Ram would start bogging when I would hit passes also.
I vote for HP (with the right rear).
I will agree with you the 4.7 is definitely a quick reving motor but I could never imagine that in a full size truck.
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Kowalski
GenIII
1/29/2009
17:50:39
| RE: CHanges in the 4.7
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Message:
How about we base this on science for a better answer than just voting on it ? As much as there is to be said for the principle of democracy, that's not the best way to decide something like this. Don't just take my word for it, please check out some other source to learn more about it (like a physics book perhaps). Just because the increase in horsepower is more than the increase in torque for your new truck does not mean that that is what you are noticing. Small changes in torque can make a big difference. Any Dodge Cummins you passed was likely either pulling a heavier load or taking it easy. Glad you are enjoying your new truck.
Lead, follow, or get out of the way
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NJDodge
Dodge Dakota
JOIN HERE
1/29/2009
21:52:38
| RE: CHanges in the 4.7
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Message:
Trust me, they were chugging. There is a drastic difference between the Hemi and the 5.9. I don't think 10% torque is the reason. All torque gets you 6000rpm and 5 mph in 1st gear.
I factory ordered both of those Rams. The only difference in equipment on them was the '99 had a 5.9 and the '03 has the hemi.
If my tractor got stuck in the mud, I would want a Cummins to pull it out with though ;)
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Kowalski
GenIII
1/30/2009
07:40:25
|  RE: CHanges in the 4.7
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Message:
Because it has more power than your truck ?
Trust me, look into this...
Lead, follow, or get out of the way
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NJDodge
Dodge Dakota
JOIN HERE
1/30/2009
18:18:17
| RE: CHanges in the 4.7
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Message:
Yeah when it is going 1 mph.
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dusty
Dodge Dakota
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2/04/2009
09:59:52
| RE: CHanges in the 4.7
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Message:
Torque is by far the biggest determining factor. Everyone looks at peak torque, but more importantly the torque needs to be high across a large spectrum of the RPM band. A truck that doesn't produce much torque under 3,500 RPM is going to be a dog in the hills and during normal acceleration. I had a 95 ford f250 with a 460. That truck peaked at an even 2,000 RPM. You aren't going to find any gasoline engines around today that produced that much low end torque, unfortunately.
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