Quote:
Originally Posted by Jerry Clayton
In addition to your valve notches not being at the proper location for your Edelbrock heads with the size valves you have----the absence of any carbon build up on the remainder of the piston top indicates that you probably don't have enough clearance in the squish area--either the pistons are above the deck or your gaskets are thinner than .047 compressed. Or possibly some pretty severe reversion/scavaging
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I think this very strange looking carbon buildup might be the consequence of the
oil dripping in the combustion chambers. It seems to be worse in the cylinders where the spark plugs were fouled the most.
I'm 99,99% sure the pistons don't stick out of the block, but I'll check again. Gaskets are Fel Pro 8548-pt 1.