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06-21-2011, 08:45 PM | #1 |
Registered User
Join Date: Jun 2011
Location: Boise, ID
Posts: 1
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67 Chevy pickup knocks after exhaust installed
I just had exhaust put on my newly rebuilt 350 in my 67 pickup. When i ran it on open headers there was no knocking noise. Now that I have the exhaust on, it makes a knocking noise that gets louder and faster as I accelerate. What could be the cause for this?
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