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Exhaust 5.7 HEMI Exhaust Discussion


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  #1  
Old 09-04-2010, 03:32 PM
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Default CAT/Y-Pipe inlet size

I basicly asked this same question at the 4.7 exhaust forum but I think the specs are the same for the 4.7 as 5.7 in this respect (correct me if I'm wrong) so I'm repeating here to get more exposure.

What is the size of the stock pipe before the Y-pipe. I ask cause I want to order a performance y-pipe and need to know the size. Obviously this should be the same size and the stock CAT inlet and outlet size.

Anyone know the answer to this one?
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Old 09-04-2010, 04:37 PM
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I beleive it is 2 1/2 im not 100% positive best thing to do is go under your truck and meassure
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Old 09-04-2010, 05:01 PM
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Originally Posted by sobercrew View Post
I beleive it is 2 1/2 im not 100% positive best thing to do is go under your truck and meassure
That is what I thought. I would measure but I don't have a caliper. I suppose I could wrap a string and do the math but I thought someone might just know.

Can anyone verify?
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Old 09-04-2010, 05:03 PM
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i cant be 100% positive but i do beleive its 2 1/2 you can also use a tape meassurer those are pretty accurret
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Old 09-06-2010, 10:22 AM
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I measured. It's 2.5" if anyone is interested.
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Old 09-06-2010, 01:08 PM
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Thanks for the info im sure that will be of good use in the future
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