[C2] What To Do With Old Side Pipes?
12-06-2018, 04:27 PM
#21
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I would guess that the ones that could accurately answer your question the best are either dead or retired at the very least.
I have read on the internet that there was some testing done and GM found out there was no performance gain using 2 1/2 exhausts after 1965. I didn't say I believe it. I said I read it on the internet.
12-08-2018, 02:50 PM
#23
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