rattling noise after cam and intake swap - Hot Rod Forum : Hotrodders Bulletin Board
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Old 06-05-2007, 08:42 AM
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rattling noise after cam and intake swap

Hi all last week installed a cam kit and new edelbrock intake on my 305 Ta,after about 2 days i notice i got a rattle which sounds like its coming from the center of the dash right behind the distributor,the noise is worse from 0-100km.I will try to describe the rattle is like 2 peices of metal shaking together,checked all the ductwork under dash and face of dash and all is tight.Also the car has headers and duals.My idle is around 500 rpm and it sputtters like its starving for gas when the idle sputters so does the rattle sound,this only happens when the car is in drive in park its fine,The performance after the swap is great no hestitation on the throttle.Thanks all.

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Old 06-05-2007, 04:36 PM
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This is a long shot stab, but worth looking into. There are rubber bump stops under the hood, the hood rides on these and after a while they get dry, When they do they squeak and make all kinda of noise, it`s just a piece of rubber on top of what appears to be a bolt. Coat them with vaseline or the like and see if the noise disappears. 500 rpm is a rather low idle, I`d think it needs to be at least 600 to 700 RPM.
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Old 06-05-2007, 04:38 PM
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Sounds like detonation to me....................Is the timing set right?
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Old 06-05-2007, 04:47 PM
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Quote:
Originally Posted by poncho62
Sounds like detonation to me....................Is the timing set right?

I do not think I can recall ever encountering detonation @ idle
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Old 06-05-2007, 04:59 PM
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Doc here,

Could The Lifters Be slightly tapping A Baffle or other valve cover item , now with the Higher lift ? Just a thought...


Maybe your squirrel has learned Morse Code..and is planning escape from the running wheel !! Just a little humor..(I know..very little humor.. )

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Old 06-06-2007, 12:11 AM
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thanks all for your inputs and Doc like the squirrel bit.
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