Dodge Engine & Exhaust Performance All EFI, Hemi, Magnum, 4.7, 5.9

any potential with a 4.7?

Old Aug 12, 2005 | 08:51 AM
  #21  
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If you are looking for performance equal to or better than your Z28 then you will need to get away from the 4X4 platforms. All of the different makes of trucks have about the same potential... but some cost more to achieve the goal. If you're a Chevy guy then just get the Silverado.
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Old Aug 12, 2005 | 01:50 PM
  #22  
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obviously it would take alot to get any truck as fast as my camaro, I am just looking for something that would make my truck a little quicker. I brought up the 4.8 chevy idea because it seems alot of the chevy guys are getting alot of power out of the LS series motors with minor work. Although, the more research that i do with KRC is showing some good numbers with the 4.7. I have pretty much decided on HO cams, intake, and pcm tuning. Money is kind of an issue, so i think i will keep the stock exhaust manifolds for now. I have no plans on nitrous, i want good all around grunt all the time.


Does anybody have a sound clip of a HO cammed 4.7 through either dual exhaust or gibson side exit?

thanks for the replies
trav
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Old Sep 10, 2005 | 09:57 PM
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Look for the Copper Dodge dakota in the video, you can hear him in his burnout.

http://www.csramotorsports.com/videos/southernnats.wmv

That's a 13sec N/A 4.7
KRC212 cams, 72MM F&BTB, Flash, Duals with Dynomax, HO intake, Volant air tube, and not much else.

Last edited by notchlx; Sep 10, 2005 at 10:01 PM. Reason: wrong url
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Old Sep 10, 2005 | 10:08 PM
  #24  
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http://www.csramotorsports.com/videos/truck.AVI

4.7 W/True Duals, Flowmaster 40series, H-Pipe
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Old Sep 12, 2005 | 05:18 PM
  #25  
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those are some pretty good videos. I wish the video of the supercharged cammed 4.7 dakota was a little brighter so I could actually see it. I pretty much want to run what that 4.7 did in the first video. I would like to see some high 13's or so for my daily driver. Within the next couple of weeks or so i think i will be ordering up the HO cams, tb, intake and posi unit for the rear end. Oh yah, and of course a custom tune. Thank you very much for the vids. If you have any more feel free to pass them on cuz i think I really like the 4.7 motor.

I just recently found out that the 4.7 is extremely popular with the hardcore off-road guys cuz it makes something like 90% of it's peak torque from like 1800 RPM all the way up to like 3500-4000 RPM.

Trav
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Old Sep 13, 2005 | 10:56 AM
  #26  
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I would recommend a more aggressive cam to go along with the other mods you're describing to hit your 13sec goal.

Did you mention your truck was a 4x4 too?
Probably need some juice or a blower to get the 4x4 in the 13's too.

Will have more vids very shortly.
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Old Sep 13, 2005 | 12:37 PM
  #27  
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Hey, gm truck guy here. I hear ya asking about the 4.8 versus the 4.7 you have. I would have to say that the 4.8 probably has more of an advantage, but not necessarily because of the motor itself, itst the aftermarket. There just hasn't been a huge rush to run out and mod up the 4.7 dodge's. However all the parts 4.8 are interchangeable with the 5.3/5.7/and in most cases the 6.0's. Thats the beauty behind the GM LS based motors. I personally have never seen a modded up 4.7, but would be cool to do. I also do not know how much parts cost on the 4.7 compared to the LS motors, the parts for GM are not cheap. It will be difficult to get into 13's with either one, the 4.7 or 4.8 especially in 4x4. I know several of my friends that are running 4.8's and they are extremely modded and running typically in the mid to high 13's. The 4.8's lack low end, but you can spin the hell out of em.

The only other thing that I could say would be to look at what the trucks purpose is. If its a daily driver then that will regulate what you should do to it. I know the dodges don't get as good of gas mileage as the gm's. With the mods in my list, I average about 18-19 mpg. Not bad considering whats been done. If mileage isn't a concern then have fun.
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Old Sep 13, 2005 | 02:24 PM
  #28  
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That definitely is a pitfall with the newer version 4.7's (not having parts interchangeable)
The aftermarket came on EXTREMELY slow for this motor but has evolved little by little every year since it's inception.

Gas mileage with the 4.7 puts the squash on the old Magnums. I've gotten as good as 23mpg with my truck. They're making a little headway in that department. On the same note, I've heard of guys with 4x4 4.7's though that only get 14MPG or so. YOUCH! Time for a HEMI.

Originally Posted by SierraCrew
The 4.8's lack low end, but you can spin the hell out of em.
That's what we love about the 4.7's
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Old Sep 13, 2005 | 03:49 PM
  #29  
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Oh no doubt, my 01 Ram 1500 with the 5.9Magnum had *** loads of torque but was a turd and let's not even talk about gas mileage. lol. I couldn't pass a gas station.

I will say that one of the best mods that I did to that truck was the F&B larger billet throttle body. Really woke the truck up as far as performance on it. I am sure that the same would still hold true on the newer motors.
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Old Sep 27, 2005 | 05:42 PM
  #30  
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Well from what I have on mine I'm just happy. I would go with an intake/exhaust combo first. I've got an Airaid intake and a Magnaflow SI/DO muffler. I'm definitely getting some gears so I would look into a set of 4.10's with posi if I were you. I also have the MOPAR HO intake manifold/cams kit. That was a definite boost. I've pulled the TCM wire and put some spring clamps on the rear end. Other than that my next performance mods are going to be gears w/posi, a true 68mm throttle body, and eventually a blower if I can find one cheap enough somewhere.
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