I have a 1978 440 block with 346 heads and need advice/suggestions on what to do about the "extra" water passages they put in these heads.
I have read that these heads were used in RV's and Trucks and the extra water passages were added to cool the area near the spark plugs.
I cannot find a head gasket with the holes as shown in the pics. Can I drill holes in the head gasket to match? Does anyone know where I can get the gasket with all the holes? or, should I not worry about it and just cover up the holes with the standard gasket?
Thanks