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

muffler question ....ODD

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Old Jan 24, 2014 | 08:58 PM
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can anyone tell me why this muffler is blocked on the one side. this is a 1985 corvette passenger side.
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Old Jan 24, 2014 | 09:34 PM
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That's normal on stock mufflers those years. When I start mine in the cold it's funny because only one tip on each side has smoke coming out of it.
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Old Jan 24, 2014 | 10:17 PM
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The other side isnt blocked at all on either tip. neither muffler has been replaced.
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Old Jan 24, 2014 | 10:54 PM
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The 85 came stock with both mufflers with only one of the two outlets operative. The other side was blocked off so only one worked.

If the drives side has both side operative....than it has to have been replaced at one point in time. I replaced my originals with mufflers that looked exactly like the stock originals but both outlets work.
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Old Jan 24, 2014 | 11:23 PM
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if i get aftermarket walker or flowmaster mufflers are all four tips operational?
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Old Jan 25, 2014 | 02:34 AM
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A friend of mine took a long screwdriver and punched a hole in the non-functional side.

I have Walker Dynomax mufflers on my car. Both tips are functional and the stainless steel tips polished up real nice. They claim they're exactly the same internally as the stock mufflers, but they are definitely louder with both tips working.
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Old Jan 25, 2014 | 09:21 AM
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Any aftermarket muffler should have both tips fully functional.

with Cliff Harris the Walker mufflers have both tips working, look good and are a little louder. You can check some of the online catalogs such as Mid-America and they list exact replica mufflers with both tips working. Helps the car breath which is a issue with the 85.

On my 85 I went to a front "Y" that was 2-1/2" tube then going into the Magniflow cat and then a standard rear "Y" with the stock looking mufflers with both tips functional. The car breathed much better. For the 1/4 mile drags, I would pull the cat and replace it with a straight thru pipe I built and the above mention rear "Y" and mufflers and cut .5 seconds off my time.
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Old Jan 25, 2014 | 03:48 PM
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sorry for not listing to everyone who told me what to do...next time I know open my ears ....this was my problem
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Old Jan 25, 2014 | 09:03 PM
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Magnaflow makes a good hi-flow bolt in replacement.
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Old Jan 31, 2014 | 10:47 AM
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Originally Posted by paintball2000
if i get aftermarket walker or flowmaster mufflers are all four tips operational?
Wouldn't touch flowmaster
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