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Thread: Muffler Selection for LS1
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08-14-2012, 06:00 AM #1
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Red metallic
Muffler Selection for LS1
Folks: I need some help selecting mufflers for my LS1 in my 62 wagon. I have been told that the mufflers have to have sufficient back pressure to make the LS1 run properly. Is this true? How do you know the muffler has sufficient back pressure? I have put an old set of mufflers on the car to get it started but I need to make a final decision on what I will run. Any advice is appreciated. Thanks again!
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08-14-2012, 07:16 AM #2
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- Aug 2010
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sebring silver- Y2K SS CAMARO
ive never heard of the need for lots of back pressure hell ive always had a very open exhaust set up on all 3 ls cars ive owned. but as far as muffler selection i would recommend a set of dynomax bullets with an x pipe thats one of the best sounds for them i think.
2000 ss camaro, forged lq9 370 short block, stage 3 PRC 243 heads, fast 102 w, big mouth throttle body, MS3 cam, 1.7 roller rockers, stage 3 t-56, monster stage 3, pro 5.0, 4.10's with moser axles, bmr tq arm, lca's, phb. SOLD (thankfully)!!!
New project: 1968 step-side, partial restore, ls/th400 swap. hopefully boosted pics and more info to come!!!
Having a small cam is like having a small dick, everytime you go to use it you wish it was bigger
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08-14-2012, 08:23 AM #3
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Black- 99 WS.6 - Modified
The backpressure rumor is wrong. Actually, a less restrictive exhaust is better. I personally run a Borla muffler on mine, and love the sound. There are quite a few muffler brands to choose from though. Try checking YouTube for different combos to find what you like.
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08-14-2012, 08:38 AM #4
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Red metallic
As always, I knew you guys could give me the "low-down" on this. I can't thank everyone enough for this website and how it has helped me over the last few months. Thanks again.
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08-14-2012, 09:16 AM #5
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sebring silver- Y2K SS CAMARO
anytime
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08-14-2012, 09:26 AM #6
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Black- 99 WS.6 - Modified
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08-14-2012, 05:37 PM #7
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08-15-2012, 01:23 AM #8
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- Sep 2011
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The backpressure myth came about because people were fitting exhausts that were bigger than they needed, this resulted in reduced exhaust velocity, which got confused with reduced backpressure.
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08-17-2012, 09:49 AM #9
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08-18-2012, 11:38 AM #10
Last edited by az gt eater; 08-18-2012 at 11:39 AM. Reason: roofer trying to type .....again
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08-18-2012, 11:52 AM #11
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08-18-2012, 01:05 PM #12
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08-18-2012, 01:32 PM #13
To each their own. I would honestly like to hear your setup in person. I do like the Borla's, and am open to admiring other options. As far as the popping under load in decel, to me, that sounds like the old school muscle, and that is why I like it so. You can actually hear the gas burbling as it is wasted igniting in the exhaust. I am not about ruining the planet, it just sounds so intimidating, and has a raw appeal that boils your blood. Again, to each their own. I respect yours, you respect mine. Harm none, do what ye will.
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08-18-2012, 01:34 PM #14
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- Oklahoma City, Oklahoma
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sebring silver- Y2K SS CAMARO
exactly lol your car your choice my car my choice
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08-18-2012, 01:39 PM #15
Yeah, I don't think I would describe the LM1 as a muffler, more of a resonating chamber. It doesn't even fit in, nor would fill the muffler chamber under our trunk decks where the factory muffler goes, it just sits alongside our torque arm. Not much muffling to it, if at all.
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