Vertastang

when i shut the car off you can hear like chattering noises like the rockers are still pumpin, its kinda weird ive noticed it before but now it dose it every time i shut her down, it dose it on both sides, thought it was just heat coming off the headers but its coming from under the valve covers, any ideas?? iam geting ready to tear the motor apart to freshen some stuff up, iam going to have a surprise when i take the covers off?????? any help would rock!!! thanks guys u have been a big help so far!!!

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