noises - Team Camaro Tech
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post #1 of 7 (permalink) Old Jan 13th, 06, 06:50 PM Thread Starter
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Robert
 
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Location: Frederick, MD
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noises

Ok, I'll try to be brief. I drive a 69 camaro with a 350, 350th, 10bolt, 3:90. Owned it a couple of months now and have experienced an unusual noise from the engine bay. it only occurs when rpms reach 4200-4300, it sounds like a pretty high pitched squeal, almost like belt slippage. The water pump looks like a stock iron unit, ps pump is stock as well, alternator is either stock or inexpensive replacement. Belts are tight and in good repair. I've thought about trying to drive through the noise, but it's pretty loud, and rather than ruin something I figured I'd ask first. Oh yea, pretty stock engine, mild cam, holley 4160, edelbrock performer rpm air gap. I don't know any of the internal engine specifics. Heads look stock also. Hooker super comp headers, 2.5" exhaust.

I'm thinking of replacing water pump to alum hi-flow unit soon. Hopefully, that will solve prob. anyone experience anything similar, or know if this is an indication of something that needs fixed/replaced.

Thanks again, you guys are great, I tell everyone that will listen, about this site.

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post #2 of 7 (permalink) Old Jan 13th, 06, 07:21 PM
wdf
 
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Re: noises

remove belts one at a time to isolate noise
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post #3 of 7 (permalink) Old Jan 13th, 06, 07:24 PM Thread Starter
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Robert
 
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Re: noises

NOTE: it also only does this under load.

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post #4 of 7 (permalink) Old Jan 14th, 06, 04:12 PM
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Smile Re: noises

rub a little bar soap on the belts and see if it diminishes the noise.
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post #5 of 7 (permalink) Old Jan 17th, 06, 08:39 AM
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Laurence
 
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Re: noises

I have the same problem at the moment- comes up to 4000 rpm and starts to squeal!...a spray of WD40 did nothing...I've been told it's probably a loose belt to the alternator (I run a march pulley system) so will have a go at that!
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post #6 of 7 (permalink) Old Feb 24th, 06, 02:15 PM Thread Starter
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Robert
 
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Re: noises

installed new water pump, alternator, hoses and belts, noises gone and revs well over 5K w/o any problems. thanks for the feedback

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post #7 of 7 (permalink) Old Feb 25th, 06, 12:05 AM
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Jimmie-Retired
 
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Re: noises

I bought a Nissan pickup several years ago from a guy that said it had a bad cam bearing because it would squeal occasionally. Tightened the belts, put 40,000 miles on it and still made $2000 when I sold it.

Jim's '69
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