Better flow in head

[Numbers]

Ive been told you can drill new lines in the head, to take care of hot spots in head.
I know nothing about this, as Im a newb to the TD world. Whats the deal with this?
Need some info, oil issues already took the life of one of my pistons.

[detobias]

do a search for '#4 cooling mod'

[Numbers]

Thanks dude

[macncheese]

There are also cross drilled holes in the later heads, not sure what year it started though, and the block has to be crossdrilled as well. Don't know too many people who've done it though. Usually just get one that was factory cross drilled.

Tony