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jasonpjohnson
Dodge Dakota
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7/13/2005
03:37:07
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 Subject: 4.7 liter "high output"?
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What is the difference between the high output 4.7L engine and the regular 4.7L engine?
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jayb
Dodge Dakota
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7/13/2005
10:25:43
| RE: 4.7 liter
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more horse power and torque. about 30 more hp.
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8Banger
Dodge Dakota
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7/13/2005
10:47:01
| RE: 4.7 liter
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Does anyone know how Dodge squeezed out the additional 25 HP? It has to be an easy upgrade.
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daddio
Dodge Dakota
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7/13/2005
11:01:03
| RE: 4.7 liter
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cams & intake manifold. available from your local dodge dealer
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RadioMan
Dodge Dakota
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7/13/2005
14:32:03
|  RE: 4.7 liter
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You hit it right on the nose, daddio!
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Mason
Dodge Dakota
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7/13/2005
14:58:07
| RE: 4.7 liter
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It's more than just cams and intake.
Check this difference table out.
Scroll down to the WJ Engine specifications table and you'll see them all. WJ is Jeep Grand Cherokee, but it's the same 4.7L engine.
http://www.wjjeeps.com/engine.htm
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jasonpjohnson
Dodge Dakota
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7/13/2005
15:22:58
|  RE: 4.7 liter
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Thanks for all the info guys. In researching this, I see that the axle ratio makes a much bigger difference in the tow capacity than the high output engine... The only dakotas available right now hav 3.55, but to get the high tow capacity, you need 3.92! What's the point in selling the V8 when all the tow you get out of it is 5600 lbs! Any idea what it would cost to swap that axle?
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daddio
Dodge Dakota
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7/13/2005
15:25:22
| RE: 4.7 liter
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i stand corrected. evidently there are a few other minor changes.
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modain
Dodge Dakota
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7/13/2005
15:48:33
|  RE: 4.7 liter
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Yeah, but the lion's share of power difference is in the cams. All the other differences are minor in themselves.
- Even though the cylinder heads are a bit better flowing the same 68mm (65mm really) TB is used.
- The compression raio is a little higher, but only premium gas will let the spark advance take advantage of it.
- The forged crank makes it stronger, not more powerful.
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EcoJeeper
Dodge Dakota
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7/13/2005
16:19:51
| RE: 4.7 liter
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Here ya go:
Seems worth it to me.
Distinguishing the 250-plus horsepower High Output Magnum V-8 from the standard output V-8 are new valve springs to control valve motion, a revised combustion chamber shape that increases intake airflow volume, a more aggressive camshaft to increase high-speed airflow, higher compression pistons (9.7:1 vs. 9.0:1) to increase power, a forged steel crankshaft for torsional stability, a revised crankshaft torsional vibration damper, and full-floating wrist pins to enhance durability.
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ptschett
Dodge Dakota
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7/13/2005
17:09:22
| RE: 4.7 liter
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jasonpjohnson: the 3.92 gears and HO engine are available on the '05's now and in fact have been available for several months. Mine has neither (I don't forsee towing more than 5000 lbs and I don't need the extra power) but I know of people who have both.
ptschett
05 CC Laramie 4x4 4.7L
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jasonpjohnson
Dodge Dakota
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7/13/2005
17:25:15
| RE: 4.7 liter
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ptschett: good to know. Thanks. I'm going through carsdirect.com and they can't seem to find one with that gearing... Not a big deal. Maybe it's just not available in California?
I just put a deposit on an '05 laramie quadcab 4x4 with the regular V8 engine and tow package. Gonna be sweet!
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Fugly
Dodge Dakota
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7/13/2005
22:53:42
| RE: 4.7 liter
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'05 Sweet?
Yeah, if you can get past the looks of it.
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DodgeMan
Dodge Dakota
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7/13/2005
23:28:02
| RE: 4.7 liter
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The 06 dakota R/T is going to have the 4.7 H.O. here in the dealer where i work were expecting them in a couple of weeks
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cj
Dodge Dakota
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7/14/2005
00:03:03
| RE: 4.7 liter
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Yeah cuz dodge is turning retarded and puts the damn R/T badge
on a normal 06 dak with the HO engine that you can get in any
other daks.... yay
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MStephens
Dodge Dakota
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7/14/2005
15:38:15
| RE: 4.7 liter
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Towing capacity isn't determined JUST by the HP. My Dakota has a 4.7, not sure if its HO or not and it pulls my 3600 lb Proline boat like its not evn behind me. MAx tow capacity is also determined by Gross vehicle weight. Something like if your car weighs 5000 lbs, you can't pull a weight so big that its X% more than the car. Otherwise, the weight behind the car could create an unsafe driving condition. Someone else can explain it better. Either way, look at the bigger vehicles, they pull more not just because they have larger engines, its because they weigh more too.
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STS
Dodge Dakota
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7/14/2005
15:40:12
| RE: 4.7 liter
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Well did you know that the H.O 4.7 in the jeep puts out more toruqe at 335 ftlbs insid of just 310??
Again, Dodge=differnt
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