exhaust with resonators - Chevelle Tech
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post #1 of 17 (permalink) Old Sep 13th, 17, 10:18 PM Thread Starter
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Al
 
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exhaust with resonators

Running OEM style exhaust system with resonators on a 70 chevelle 402. Wondering what advice you guys could give me on bringing up the sound out of the pipes. I know the resonators sole purpose is to tone down the sound, but looking for a bit more rumble. Thanks.
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post #2 of 17 (permalink) Old Sep 13th, 17, 10:44 PM
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Re: exhaust with resonators

Try a set of Flowmaster Mufflers. I have Flowmaster 40s (2 1/2" pipes with X crossover) and everybody ('cept The Rib) loves them.

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post #3 of 17 (permalink) Old Sep 13th, 17, 11:51 PM
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Re: exhaust with resonators

x2 on 40 series
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post #4 of 17 (permalink) Old Sep 14th, 17, 8:01 AM
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Re: exhaust with resonators

Try Turbo mufflers with no resonators..

X pipe made my 454 sound like a 6 cyl.. I couldn't get that thing off fast enough!

I'm listening to a ring in my ears now as I type this from open headers, glass packs and construction equipment, it never goes away.. Think about that when your tempted to get noisy mufflers just so your car can sound fast or cool to impress people..
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post #5 of 17 (permalink) Old Sep 14th, 17, 8:16 AM
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Re: exhaust with resonators

Creep up on it. Just remove the resonators first.

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post #6 of 17 (permalink) Old Sep 14th, 17, 8:44 AM
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Re: exhaust with resonators

Removing the resonators first won't cost anything to try but my understanding is that they don't typically mask the low rumble he seeks. In fact they take out some of the higher frequencies associated with drone and make the low end sound more evident.
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post #7 of 17 (permalink) Old Sep 14th, 17, 9:28 AM Thread Starter
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Re: exhaust with resonators

Flowmaster 40s would be the more mild of the series?
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post #8 of 17 (permalink) Old Sep 14th, 17, 10:46 AM
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Re: exhaust with resonators

No, they have some that are quieter than 40's, like the 50's I think.
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post #9 of 17 (permalink) Old Sep 14th, 17, 7:36 PM
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Re: exhaust with resonators

Al, you say " OEM Style ". Is this a kit from Ground Up or Gardner? What mufflers are on it right now?

Dan
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post #10 of 17 (permalink) Old Sep 14th, 17, 9:39 PM Thread Starter
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Re: exhaust with resonators

This is the Ground Up exhaust system that they sell, they say just like the factory. I have a period correct car so that's why I chose this system. Might be worth trying the Flowmaster 40 or 50 series to get a better sound.
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post #11 of 17 (permalink) Old Sep 15th, 17, 11:10 PM Thread Starter
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Re: exhaust with resonators

Has anyone tried this combination before? Thanks.
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post #12 of 17 (permalink) Old Sep 16th, 17, 9:46 AM
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Re: exhaust with resonators

I'm sorry but I didn't see resonators on the Ground Up system. Their system should use baffled mufflers rather than the more open style chambered. Prepare to get loud with chambered mufflers and no resonators.

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post #13 of 17 (permalink) Old Sep 16th, 17, 10:43 AM
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Re: exhaust with resonators

Al, I'd lean towards a Walker/Dynomax Super Turbo with your set-up. It would still look factory.

Also, try Waldron's Exhaust. They have a muffler called a Turbo Imposter which might be the ticket for you:

WALDRON’S MUFFLER OPTIONS

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post #14 of 17 (permalink) Old Sep 16th, 17, 11:14 AM
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Re: exhaust with resonators

Not as simple but a cam will make a difference in how it sounds and still look period correct.

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post #15 of 17 (permalink) Old Sep 16th, 17, 4:22 PM
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I have the Gardner system and put Dynomax Super Turbos on instead of the stock mufflers. Sounds nice and throaty, not real loud and still use the resonators.

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