Head gaskets are designed, in part, to control the flow pattern and volume of coolant between the block and heads. ALL the casting holes are intended to remove sand during the casting processes. DO NOT alter the head gasket's holes or else you WILL have cooling problems.

I was a former gasket engineer for a major mfgr... that was always (and remains) the #1 Tech Line question we received... regardless of the make/brand of the engine. The car manufacturers determine the casting holes and the gasket coolant holes during endless testing before mass-production.

Mopar Mitch "Road racers and autocrossers go in deeper and come out harder!"... and rain never stops us from having fun with our cars... in fact, it makes us better drivers! Check out MOPAR ACTION MAGAZINE, August 2006 issue for feature article and specs on my autocross T/A!