400ci-engine runs quiet when cold-after it warms up to operating temp makes tapping noises.not bad like a rod or anything drastic-lifters or rocker adjstment? hydralic cam-061 heads any one can help to put me on right track? still learning!!! also wondering about best heads have 6x-4 ram air 1 and the 061 to choose from. occasional driver,street racer-having fun
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