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dvc357 03-24-2011 12:31 PM

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?

RamTech 03-24-2011 12:38 PM

What you'd gain in upper RPM horsepower would probably be lost in low RPM torque.

dvc357 03-24-2011 01:54 PM

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.

05atlanticblue 03-25-2011 12:32 AM

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.

916Timmy 03-25-2011 12:44 AM

^^^^^^Sounds like a great the spintech sound!!!

dvc357 03-26-2011 09:58 PM

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!?!

916Timmy 03-26-2011 10:26 PM

Single it and dump it under the bed!

05atlanticblue 03-28-2011 01:51 AM

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.

dvc357 03-29-2011 07:18 PM

Spintech VS Flowmaster 50?

appstatexj 03-29-2011 11:05 PM

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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