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pittdawg
Dodge Dakota
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3/12/2002
16:55:59
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 Subject: 4.7 performance mods
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From what I've heard its pretty hard to get much more power out of the 4.7 than how it comes stock. I've heard it has pretty darn good and free flowing exhaust and intake manifold. What about the intake? Has any body only bolted on an aftermarket intake with no other modifications and experienced a powerGain?
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CW
GenIII
3/12/2002
20:48:12
|  RE: 4.7 performance mods
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No IMO you really have to do the 4.7 as a package. Exhaust intake all or none. If you are looking for more hp without much anything else then get your PCM flashed.
2001 RC 4.7 5sp 9.25" 3.92 LSD
Ported 68mm TB, IAT adjuster, 3" flowmaster cat back, TPS @ .76V, 4" cold air, Roadmaster active suspention, Removed Third cat, Electric fan Convertion, HO cams.
Working on adjustable fuel pressure with return.
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Chris Maher
Dodge Dakota
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3/18/2002
10:39:23
| RE: 4.7 performance mods
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Is it worth taking out the thrid cat? Does it sound better or make the performanc of the 4.7 any better at all i dont want my truck sounding like a hikc truck thanks alot Chris
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QUADMAN
Dodge Dakota
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3/18/2002
12:10:23
| RE: 4.7 performance mods
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Look! If your gonna make fun of us "HICKS"! Atleast spell the word right!
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kicker01
Dodge Dakota
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3/18/2002
15:55:29
| RE: 4.7 performance mods
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If you dont have emissions testing where you live and arent afraid to cut it out then go ahead. It will be significantly louder. I have a flowmaster 40 series single in dual out and its pretty loud but thats what I wanted. For me it gave me a noticable gain in the higher rpm range (3000-5000).
'01 RC 4.7 5spd
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dodgert
Dodge Dakota
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11/19/2003
17:38:41
| RE: 4.7 performance mods
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does anyone know a site that specializes in the 4.7?? im looking around and cant find anything for my 4.7 except intake
thanks
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01Motorsport
Dodge Dakota
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11/19/2003
18:04:18
| RE: 4.7 performance mods
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There is a lot of information here, but the mods are under different search titles. Put "4.7" in front of air intake, IAT, exhaust, PCM flash, HO cams, HO intake, throttle body, etc.
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90daknthe12s
Dodge Dakota
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11/21/2003
19:06:55
| RE: 4.7 performance mods
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the best gain on a 4.7 would be a 75 shot of nitrous.we have a test truck in my Hot rod class out off all the bolt ons and programmers the nitrous proved to be the best it even beat out the super charger. we got an avrege of 83 hp in 4 pulls, third gear automatic tranny at the wheels the throttle boddy gained about 40 @ the wheels but did not pass emmisions.
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Kowalski
Dodge Dakota
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11/22/2003
07:49:31
| RE: 4.7 performance mods
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The other problem with nitrous is that the power is not always there - you continually use it up and have to refill the bottle. I want my power on the street, all the time.
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Dakota Dave
Dodge Dakota
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3/14/2006
17:30:25
| RE: 4.7 performance mods
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I am new, are 2 of 3 of those things cats in the exhaust stream? with the big long round one in the middle a muffler?
I have the 05 V8 4.7........
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Kowalski
GenIII
3/14/2006
18:06:48
| RE: 4.7 performance mods
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I'm not sure about how the '05 comes; but 4.7's have some combination of two precats before the y in the pipe and/or one cat close after the y.
Lead, follow, or get out of the way
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DakotaJeff
Dodge Dakota
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3/14/2006
20:26:00
| RE: 4.7 performance mods
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Hey fellas..quick question for ya's. What the reliabilty/longevity of this motor?. Ive been checkin out a 2000 truck at a used car lot, says it has 124k on it.I know this is a pretty new notor for mopar, but just wondering how its stacking up against the old v-8's
Thanks in advance
Jeff
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GraphiteDak
GenIII
3/14/2006
22:30:47
| RE: 4.7 performance mods
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Kowalski. Was that (old post) yours before you were a member? LOL!
Oh and my 4.7 had only one large cat. I WISH it had the dual precats so the duals would have been easier. I had to buy TWO new cats when I did my duals.
DakotaJeff. I have a used 4.7 i bought that was damaged from not changing the oil, etc. Had nearly 100k
The cyclinder walls are like new still. Similar to the older long running 318's, there is absolutely NO ridge on the top and the cross hatches are STILL there!
I plan on just fixing the bottom end and cleaning it up with new rings and it's gonna get installed in a car.
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Kowalski
GenIII
3/15/2006
17:54:35
| RE: 4.7 performance mods
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Yupper. Actually between memberships - before that I poststed using another name, but a bunch of folks got pissed at me for complaing about a problem I had with their hero "Bernd". Then after I changed it, a whole lot of folks got burnt by Bernd, and he is no longer here...
And yes Dave, the big one's your muffler.
Lead, follow, or get out of the way
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novaDAK
Dodge Dakota
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3/15/2006
21:32:57
| RE: 4.7 performance mods
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"I am new, are 2 of 3 of those things cats in the exhaust stream? with the big long round one in the middle a muffler?
I have the 05 V8 4.7........"
I think the new 05's come with a resonator which is what one of those is. One's a cat, one's a muffler, and one's a resonator. I don't know if it has the y-pipe precats or not though.
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glk21c
Dodge Dakota
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3/16/2006
12:27:34
| RE: 4.7 performance mods
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my 02 had 155000 miles on it when I traded it in and still ran like new. really good motor
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Greg
Dodge Dakota
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3/23/2006
13:22:56
| RE: 4.7 performance mods
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I would have to say at this point... 165 000km...
Hard ass KMs... that my 4.7 is still running great... I have yet to change my spark plugs...
I live in Yellowknife North West Terretories and the temp drops to -45c quite often... yet my old stud Leroy always fires up... I had a little knock on cold start up, but upgrading the synthetic brand of oil fixed it... Great truck...perfect engin... I love it. I work and play with my beast... and he treats me very well.
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Blanche
Dodge Dakota
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3/25/2006
23:41:57
| RE: 4.7 performance mods
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My 05 4.7 has 2 cats before the y then a resonator, the muffler then another resonator.
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Kaine
Dodge Dakota
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3/26/2006
02:01:10
| RE: 4.7 performance mods
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My 04 only came with the two cats off each bank, and my fathers only has the one under the cab
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Dakota Dave
Dodge Dakota
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4/03/2006
18:18:04
| RE: 4.7 performance mods
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I have done some other searches and found some guys that have removed the Muffler (big and round). Some have replaced it with straight pipe, others with an aftermarket muffler. Everyone seems to be happy, noone has gone back. I wouldnt want to change the torque, but would like to get another mpg and maybe a growl to go with it?
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feelthepower
Dodge Dakota
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4/10/2009
03:14:44
| RE: 4.7 performance mods
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so im curious as to why you need three set of cats.. i have a 2003 4.7l v8 and was told to remove the cats would cut back on all my back pressure..is that just gobbly-gook? or is there truth to that...? unless back pressure isn't as important as i thought..?
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