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  #1  
Old 11-12-2013, 11:21 PM
boostedgta boostedgta is offline
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Default 03 Ram 1500 4.7L 4x4 QC exhaust question

Trying to help my father in law pick out a muffler for his 03 1500 4.7L QC 4x4... he wants a deep sound and likes the classic "crackle" on decel. That makes me think he would like a Flowmaster original 40 series... Any other suggestions?

What is the stock size and config of these trucks? single in/dual out? 2.5"? I need to know what size to order.

thanks!
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Old 11-13-2013, 06:46 PM
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On a 4.7, it should be single in/single out. Now, you can do SI/DO, or DI/DO w/Y pipe delete like I did. Are you going to bolt it or weld it?
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Old 11-13-2013, 09:25 PM
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Ok, we will take to a muffler shop to weld in place... and he would probably like single in/dual out and have them run some pipes out the back. Do we need 2 1/2" or 3" muffler?
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Old 11-13-2013, 10:00 PM
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I believe a 3" inlet/2.5" outlet is what you would want.
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Old 11-13-2013, 10:52 PM
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So the stock inlet diameter is 3"?
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Old 11-13-2013, 11:44 PM
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A straight through muffler (magnaflow, dynomax, etc) will give you more of that "crackle" upon decel sound as compared to a chambered muffler (flowmaster, stock, etc). They are also typically quieter at idle/low throttle and only loud upon heavy throttle and higher rpm. Resonance can become an issue though at low rpm/heavy load. But this is true of all free flowing mufflers.
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Old 11-14-2013, 01:50 AM
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Originally Posted by snrusnak View Post
A straight through muffler (magnaflow, dynomax, etc) will give you more of that "crackle" upon decel sound as compared to a chambered muffler (flowmaster, stock, etc). They are also typically quieter at idle/low throttle and only loud upon heavy throttle and higher rpm. Resonance can become an issue though at low rpm/heavy load. But this is true of all free flowing mufflers.
^^^^^^ What Sean said. I don't know right off hand what size the pipes are, but if you're gonna be taking it to a muffler shop, he'll know exactly what you have and what you need.
I got the Magnaflow 14" Duel In/Duel Out and love it. I have the pipes dumping in front of my RR tire. Sounds great cruising and at idle. But when I get in it, gawd, it makes my nipples hard.
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Old 11-14-2013, 08:24 AM
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Both my 06 4.7 and my 04 Hemi were 3" inlet so I would say it's a safe bet.
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Old 11-14-2013, 12:37 PM
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I'd go with the Magnaflow over Flowmaster if it were me. They have a decent sound at idle, BEEFY sound at WOT, and will still allow for a little of the exhaust crackle on decel.
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Old 11-14-2013, 03:47 PM
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I'd go with the Magnaflow over Flowmaster if it were me. They have a decent sound at idle, BEEFY sound at WOT, and will still allow for a little of the exhaust crackle on decel.
+1 on what Tommy said!
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