is the plug blowning out a big problem in our 4.6 heads ?
what years are more pron to it ?
is a compression ratio of 9.9.1/ >> 10/1 too high for stock heads? or is the problem just on supercharged motors ?
what years are more pron to it ?
is a compression ratio of 9.9.1/ >> 10/1 too high for stock heads? or is the problem just on supercharged motors ?