C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Help Choosing Mufflers

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Old May 31, 2015 | 06:39 PM
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Default Help Choosing Mufflers

I have a 96 CE LT1 that the previous owner eliminated the mufflers on. The drone is driving me nuts and making the car significantly uncomfortable to drive. I'd really like to go to a much quieter setup at least inside the car. I don't care much how loud it is outside. I'm on a very limited budget so cat back isn't really an option. I figure that almost any muffler will be quieter than no muffler, but I want to get the best bang for my buck. I need to keep each muffler limited to no more than $100.

I'll end up having my mechanic installing them since there are no muffler shops within 100 miles. They told me nothing that requires welding.

First question is whether or not the mufflers should be offset. Since I don't have anything there right now I can't tell what the originals were.

Please be gentle as I'm not really mechanically oriented, but I love my new toy.
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Old May 31, 2015 | 06:50 PM
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Where are you located? I had a CE and went eliminators on it,just sold the car awhile ago,I have the original mufflers.
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Old May 31, 2015 | 06:51 PM
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Originally Posted by JimmyS5600
Where are you located? I had a CE and went eliminators on it,just sold the car awhile ago,I have the original mufflers.
I'm in northern New Mexico close to Santa Fe.
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Old May 31, 2015 | 07:01 PM
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Look into Flo-Pro mufflers. Great price....


http://www.usaperformanceexhaust.com...oval%20muffler
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Old Jun 1, 2015 | 09:06 PM
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So are the mufflers offset or straight through 2.5 inlet and ? outlet?
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Old Jun 1, 2015 | 09:33 PM
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Originally Posted by PJake
Look into Flo-Pro mufflers. Great price....


http://www.usaperformanceexhaust.com...oval%20muffler
Those won't fit or look right. Amazon has Walker quiet flows for around $100 ea.
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Old Jun 1, 2015 | 09:51 PM
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Originally Posted by jv9999
Those won't fit or look right. Amazon has Walker quiet flows for around $100 ea.
Walker quiet flows sound perfect. When I went to their web page I couldn't find a listing for a 96 Corvette. Where else could I look to make sure I get the right part #?
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Old Jun 1, 2015 | 09:55 PM
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Originally Posted by toricred
Walker quiet flows sound perfect. When I went to their web page I couldn't find a listing for a 96 Corvette. Where else could I look to make sure I get the right part #?
Hmm, they seem to be discontinued, sorry for the bad lead.
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Old Jun 1, 2015 | 10:00 PM
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That's too bad because they sounded like the perfect solution.

Updated:

I was also looking at Dynomax VT since they seem to have a reputation for being quiet. Any opinions?
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Old Jun 9, 2015 | 01:04 PM
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I experienced similar issues with my 94. Drone was horrible. Previous owner had installed dynomax mufflers. I tried to determine which mufflers would return me to a quiet interior. I found nothing that gave me confidence.

I looked and found a low mileage factory cat back. Maybe for $120 or little higher. Drove 125 miles brought it home, installation was $100ish and I am happy.

Watch craigslist and the parts forum here. Not a high demand item so don't accept an inflated price.
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Old Jun 9, 2015 | 07:30 PM
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Default 1996 Corvette LT4

I would put only Walker original type on my 96, sorry to hear that Walker mufflers are not available.
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Old Jun 10, 2015 | 01:45 AM
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Post #115 on Page 6 of the thread, below. VASTLY reduced the drone in my '96 CE with muffler eliminators. Cost me all of $40.00!

Good luck!

https://www.corvetteforum.com/forums...t-drone-6.html
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Old Jun 10, 2015 | 07:41 AM
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I picked up a factory LT1 exhaust system on Craigslist for $75. Look for a used system locally, likely someone near you has one taking up space that they wil let go cheap. Worth a search.

Stock mufflers for me with an x pipe in place of resonator. Nice sound, no drone.
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Old Jun 10, 2015 | 08:25 AM
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I didn't see it yet but make sure you buy offset inlet mufflers. I bought center in center out flowmasters and it made it tricky for the shop to install. The offset inlet makes so you dont have to do a severe bend to miss the rear suspension.

Last edited by tgurnick; Jun 10, 2015 at 12:15 PM. Reason: Spelling
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Old Jun 10, 2015 | 12:06 PM
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Originally Posted by toricred
So are the mufflers offset or straight through 2.5 inlet and ? outlet?
Offset inlet, center outlet. This allows clearance of the spare tire tray without any sharp bends.

Originally Posted by jmgtp
I picked up a factory LT1 exhaust system on Craigslist for $75. Look for a used system locally, likely someone near you has one taking up space that they wil let go cheap. Worth a search. Stock mufflers for me with an x pipe in place of resonator. Nice sound, no drone.
I agree. You might be able to find something aftermarket that helps with the drone but IMHO there's nothing better than the factory mufflers to really eliminate drone. And the factory exhaust was pretty good performance-wise. Freer-flowing performance exhaust may add HP to the top end but it takes TQ away from the bottom end.

Many people modify the exhaust on these cars so you should be able to find stock parts in good condition, if not a full cat-back then at least the mufflers. May just take a bit of searching to find it, and perhaps a longer drive than you wanted. But the parts are out there. When I bought my car, it had muffler eliminators and a nasty drone at highway speeds. No way I was going to live with that. I lucked out and found a pair of brand-new (yes they were new) OEM mufflers at a local shop, complete with rectangle tips, installed for under $300.

EDIT: some exhaust joints use U-bolts, others are welded. My muffler shop cut off the tips with a sawzall and welded the mufflers onto the ends of the pipes. To be done properly I believe this particular joint is welded.

Last edited by DGXR; Jun 10, 2015 at 12:09 PM.
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