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Old 12-11-2013, 05:37 PM   #1
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Question Muffler replacement

Shop I went to today gave me a hard time saying no one makes anything to fit and must be fabbed.

It's a Cummins 300hp, 4" coming in to side or top, 5" out the back center.

about 8" dia 36" long.

Any suggestions?

Or I saw something here about a less restrictive exhaust called
Aero Exhaust Aeroturbine AT5050 Diesel Muffler.

I guess with some elbows it could fit fine.




Any thought stock type or Aero? I don't mind if it's a bit louder.


.
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Old 12-11-2013, 06:33 PM   #2
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Go to a truck shop and buy a 4 in 90 degree elbow and a 4" to 5" increase and then order the 5050 muffler. Will also need muffler clamps and hangers. It is somewhat louder, but breathes a lot easier. With a stock muffler my C7 cat always sounded constipated.
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Old 12-12-2013, 08:55 AM   #3
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Quote:
Originally Posted by stuhly View Post
With a stock muffler my C7 cat always sounded constipated.
My ISL sounded the same way. I put the 5050xl on and yes, it is louder but I also feel that the turbo spools quicker. And the coach lost about 60 pounds to carry.

Good Luck
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Old 12-12-2013, 10:01 AM   #4
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Check Summit Racing, as that is where I got the replacement for my 2003 Endeavor when I had it.
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Old 12-12-2013, 11:11 AM   #5
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Jimbo, find yourself a good mobile truck mechanic and he can probably do the install for you.
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Old 12-12-2013, 01:28 PM   #6
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Just ordered from Aero, 5050XL I need 1 90 and few clamps and a hanger.

I'll report back.....
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