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#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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#2 |
Registered Cruiser
Join Date: May 2002
Location: Las Vegas NV
Posts: 2,230
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Re: 67 Chevy pickup knocks after exhaust installed
Check your torque converter bolts.
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I intend to live forever. So far, so good. |
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#3 |
Registered User
Join Date: Mar 2010
Location: Scranton,Pa
Posts: 423
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Re: 67 Chevy pickup knocks after exhaust installed
You probably could'nt hear it before. My drive gears never bothered me until I got pipes installed out the back.
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"When I die, I want to go peacefully like my Grandfather did, in his sleep -- not screaming, like the passengers in his car. " Last edited by Frkypunk70; 06-21-2011 at 09:10 PM. |
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#4 |
Registered User
Join Date: Aug 2002
Location: Muskogee, Oklahoma
Posts: 2,914
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Re: 67 Chevy pickup knocks after exhaust installed
I'd say loose rocker arms, they can really be loud with a quiet exhaust.
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#5 |
Senior Member
Join Date: Nov 2003
Location: Brookings, SD
Posts: 10,497
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Re: 67 Chevy pickup knocks after exhaust installed
Two observations/ideas:
1) With uncorked headers, how would you know the knocking wasn't there? Seems to me the uncorked headers would make so much noise you wouldn't be able to hear the knock. 2) If it was truly caused by the new exhaust as your title implies, then I would check the exhaust first. An exhaust leak can sound like a knock to some people.
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#6 | |
Registered User
Join Date: Mar 2010
Location: Scranton,Pa
Posts: 423
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Re: 67 Chevy pickup knocks after exhaust installed
Quote:
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"When I die, I want to go peacefully like my Grandfather did, in his sleep -- not screaming, like the passengers in his car. " |
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#7 |
Registered User
Join Date: Oct 2005
Location: Metro Vancouver
Posts: 444
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Re: 67 Chevy pickup knocks after exhaust installed
Maybe an exhaust leak ??
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