whats the easiest way to find the cc's of the heads? i have been searching for the casting number high and low but i still cant find anything. im going to put new pistons and rings in, i have the cc's for the cylinders, but i need the cc's of the heads so i can be sure the compression is right for pump gas. trying to get a little more power out of it! oh and does any one know what the optimum compression ratio is for using 92 octane? im thinking in the range of 9.2:1.
