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Custom Dodge Ram Performance Mods - Engine - 4.7 Liter V8 Discuss modifying your Dodge Ram with Performance Parts and Accessories!
Factory Spec: 4.7-liter V8 engine - 310 horsepower, 330 lb-ft of torque.


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  #1  
Old 03-24-2011, 11:31 AM
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Default Exhaust Questions

Old Newbie Here.
I've got a 1500, 4X4, Crew Cab with a 4.7L.
I was thinking about going to a : 2 into a true 3" Y pipe, into a 3" Muffler and to two 3" outs and running those straight back, both exiting in the back together on the right side.
Is there any quantitative benefit to getting a true set of 3" Duals with a cross over instead?
Thanks

Last edited by dvc357; 03-24-2011 at 11:33 AM.
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Old 03-24-2011, 11:38 AM
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What you'd gain in upper RPM horsepower would probably be lost in low RPM torque.
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Old 03-24-2011, 12:54 PM
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You know, that was my gut feelings.
I was hoping somebody might have stored some track or dyno data.
Something that would indicate real world "Street" superiority.
I dont tow, and i only carry a load a few times a year. I hit the trails about as often and primarily drive to and from work. Lastly,
I'm old but can be goaded into an occasional "appropriate" street race.
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Old 03-24-2011, 11:32 PM
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with that setup you'll lose bottom end. a single 3" is just right. i just installed a single 3" with a spintech super pro street muffler. good and loud and just at the line where there is enough backpressure.
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Old 03-24-2011, 11:44 PM
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^^^^^^Sounds like a great setup...love the spintech sound!!!
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Old 03-26-2011, 08:58 PM
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You know i never really thought about Spintech because they are hard to find, but browsing their website i guess i could order one up there. Also, maybe the best of both worlds. They have a 3" dual in with cross flow and 3" dual out.
Maybe i should stick with singles!?!
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Old 03-26-2011, 09:26 PM
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Single it and dump it under the bed!
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Old 03-28-2011, 12:51 AM
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from the experience with my truck, have a tailpipe as you want the extra backpressure.
i ordered directly from spintech and had the muffler two days later.


i have a cell vid of my exhaust, just need to upload it to youtube.
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Old 03-29-2011, 06:18 PM
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Spintech VS Flowmaster 50?
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Old 03-29-2011, 10:05 PM
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I've got a 3" single exiting in the stock location, but got an new over the axle tail pipe to lose the factory resonator on my '07 (and of course a polished 3.5" stainless tip ). I went with a 18" Magnaflow though, and love the sound. It's loud, but not obnoxious. Nice, deep tone down low and sweet modular V8 sound at the higher rpm's. I love it. Good luck with whatever set up you choose!
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