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LQ4 6.0 exhaust bottleneck


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I was under my truck and saw that one of the exhaust pipes around the trans/engine area that goes over a crossmember is severely 'squished' in a way that it seems to almost be flat. It is very far from being round and it almost the shape of the 4th-gen Z28 exhaust tips.

 

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It is not a bottle neck. It is wider. Isn't of a circular cross section, it is oval. Then goes back to circular. My 4.8 and 6.0 have had this

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