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Unread 06-12-2013, 04:21 PM   #1
brewcity1
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Stock 5.9L exhaust and cat size?

Hey guys...I searched, and cant find a straight answer...what is the size of my exhaust pipe going in and out of my cat...then in to my muffler, and out to the tailpipe? Some say 2.25, some say 2.5, some say 2.75. I just need to know because I need a new cat and muffler, and need to know the sizes to get on each.
Thanks for the help!

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Unread 06-12-2013, 04:24 PM   #2
HighLonesome
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Kolak would know that exactly. Pretty sure the tailpipe from the muffler on is 2.75"
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Unread 06-12-2013, 04:27 PM   #3
brewcity1
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Originally Posted by HighLonesome View Post
Kolak would know that exactly. Pretty sure the tailpipe from the muffler on is 2.75"
I should have emailed him first...sorry.
Thanks for the info on the muffler back!
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Unread 06-12-2013, 04:27 PM   #4
PolkaPower
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I measured mine. It's smaller than 3 but larger than 2.5 so 2.75 sounds right.
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Unread 06-12-2013, 05:09 PM   #5
brewcity1
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Originally Posted by PolkaPower View Post
I measured mine. It's smaller than 3 but larger than 2.5 so 2.75 sounds right.
Cool...thanks a lot!
So that is all the way from into the cat, out the cat into the muffler, and out to the tailpipe right?
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Unread 06-12-2013, 05:24 PM   #6
PolkaPower
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Quote:
Originally Posted by brewcity1 View Post
Cool...thanks a lot!
So that is all the way from into the cat, out the cat into the muffler, and out to the tailpipe right?
No just from the muffler to the tail.
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Unread 06-12-2013, 05:51 PM   #7
brewcity1
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Originally Posted by PolkaPower View Post
No just from the muffler to the tail.
Oh...OK.
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Unread 06-13-2013, 12:34 PM   #8
rgreen
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i have a 5.9L and replaced the cat and muffler, the answer is 2.5
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Unread 06-13-2013, 04:08 PM   #9
brewcity1
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Originally Posted by rgreen View Post
i have a 5.9L and replaced the cat and muffler, the answer is 2.5
Thank you so much for that info...I really appreciate it.
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