454 engine Whistles


Old 03-25-07, 06:57 PM
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Join Date: Mar 2007
Posts: 1
454 engine Whistles

Have a old 1986 454 chev. I just put a new fan belt on it. The engine whistles when I give it gas, not at idle, a sharp whistle, I sprayed the belts with belt dressing and it may have helped a little, but still whistles.
Thnaks fo any advice.
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Old 03-25-07, 09:10 PM
Join Date: Nov 2006
Location: Jersey
Posts: 526
Try removing all the belts and test run the motor for no longer than 30 seconds to a minute. If the wistle goes away it was either a bad pulley or bad belt.
It could also be something somewhere in the path of your exhaust flow causing a whistle as the exhaust flow increases.
Did you just do something to your exhaust ?
Old 03-02-08, 08:25 PM
Join Date: Feb 2008
Posts: 3
I wish I had a whistling noise in my 454 chevy. That way I would know I owned a 454 chevy engine.
Old 03-03-08, 08:02 AM
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Join Date: May 2007
Location: Wisconsin
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Are you SURE the belt dressing helped, a little? If it did, I guess it must be the belt then, or bearing related.


Ha, ya. And the LS-6 version would be extra special. (Look it up)


Just went back and noticed thread from about a year ago. How is it posters are bringing up these old threads, and why?

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