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True duals with GMMG mufflers?

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Old Dec 8, 2009 | 09:34 PM
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Default True duals with GMMG mufflers?

I've been thinking about this for a while. How do you guys think a true dual with GMMG mufflers setup would sound? Something similar to this image I stole from the true duals thread. Maybe it's pointless I don't know, but it's a fun idea to toy with.

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Old Dec 9, 2009 | 10:09 AM
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I was thinking the same thing. Where would you get the mufflers from? How big are they?
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Old Dec 9, 2009 | 12:47 PM
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I would love to do the same thing, but to my knowledge, GMMG only sells the cat-back, not the individual mufflers.
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Old Dec 9, 2009 | 01:06 PM
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you can buy chambered mufflers from several places.

which is basically what the GMMG's are.

that setup looks sweet...
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Old Dec 9, 2009 | 01:15 PM
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and there lies the problem. Although there may be another company that makes chaimbered mufflers like the gmmg. I don't know
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Old Dec 9, 2009 | 01:21 PM
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http://www.classicchambered.com/classic/wheels.html

hear is were i am getting mine. i am doing the exact same setup... should be done in about 3 month


mark
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Old Dec 9, 2009 | 02:18 PM
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thing i don't like about most chambered mufflers is that even though alot have 3" inlet/outlet...the inside is still restricted down to 2.5" or so.

so in that case, i'd def just do a 2.75" exhaust...no sense going crazy with 3" TDs. not worth the loss of clearance.
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Old Dec 9, 2009 | 02:37 PM
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Dual 2.5" exhaust can still support plenty of horsepower though. I'd like to go with a TD 2.5" system with a chambered exhaust behind the rear axle going in each direction.
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Old Dec 9, 2009 | 08:18 PM
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I believe that picture put up by the OP is from the Sweet Thunder website. I took them off my true duals, because they didn't seem loud enough for me. I am considering putting them back on now that my true duals go out the back rather than being dumped like before.
-Joel
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Old Dec 9, 2009 | 10:19 PM
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That set up is nice looking.

You can get the "GMMG" mufflers from classic chambers website as posted previously. I am running that muffler in my I pipe on my GMMG set up
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Old Dec 9, 2009 | 10:38 PM
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Originally Posted by teke184
thing i don't like about most chambered mufflers is that even though alot have 3" inlet/outlet...the inside is still restricted down to 2.5" or so.

so in that case, i'd def just do a 2.75" exhaust...no sense going crazy with 3" TDs. not worth the loss of clearance.
nope--read the site...true 3" inside/3-1/2" outside diameter.
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Old Dec 10, 2009 | 05:54 AM
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its more of a warning...i've definatly seen some chambered muffler designes with a much smaller inside diam.

maybe just not those
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Old Dec 10, 2009 | 12:55 PM
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no one makes chambered mufflers like GMMG does. there is that new company that supposedly makes their mufflers though that is saying they will sell them direct. Sweet thunders are completely different and powersticks are more like dynomax bullets.
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Old Dec 10, 2009 | 01:54 PM
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That madhammer website? I would love to buy the mufflers direct.
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Old Dec 10, 2009 | 07:27 PM
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Originally Posted by teke184
thing i don't like about most chambered mufflers is that even though alot have 3" inlet/outlet...the inside is still restricted down to 2.5" or so.
check out POWERSTICKs.
They don't neck down like you think.
My setup is LT's, custom ORY, FM-Merge, POWERSTICK I-pipe then a turndown.
Sounds pretty mean at idle.
Pretty nasty at WOT too.
-Matt
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Old Dec 10, 2009 | 08:09 PM
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Subscribing to see what a true dual system with The GMMG or similar mufflers would sound like. So if you have this setup or plan on it it post up a sound clip plz!
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Old Dec 11, 2009 | 04:23 AM
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Theres also the cherry bomb mufflers and sweet thunders that can be used.
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Old Dec 12, 2009 | 04:38 PM
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My lt1 with 2.5" Classic chambered mufflers, true 2.5" from these guys 3" outside diameter. Closest thing to actual GMMG.





LT1

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Old Dec 12, 2009 | 04:56 PM
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Nice car! Looks good and sounds good. I would like to hear a similar setup or like I asked for earlier in a car with a big cam. Curious to see if it becomes obnoxiously loud.
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Old Dec 23, 2009 | 11:04 PM
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Originally Posted by hitmanws6
no one makes chambered mufflers like GMMG does. there is that new company that supposedly makes their mufflers though that is saying they will sell them direct. Sweet thunders are completely different and powersticks are more like dynomax bullets.
WRONG - not like Bullets. The Dynomax Bullets are nothing more than glasspacks - NO sound tuning at all & obnoxious loud. They are OK if you have limited room & want to shave off 2 dBA's. I make chambered exhaust mufflers a little different than GMMG - mine have larger internal cores so they flow a lot more cfm's. No reason for me to start building something new & not improve it. I sell these direct plus I have some dealers. Do a search here on LS1 for "Powerstick." There are over a hundred threads with them.

Made in the USA by an enthusiast like you guys are. An old school hardcore exhaust item with new school design applied.
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