hello..wellll Larry, I have done both-Sonic tests and cut up heads to find out what these heads look like-also I have seen many at PES cut up and not cut up........I wont cut up a good head!!!!!-i just sonic test to find out if it is a good candidate-if its good and has room to cut for hardened seats I use it..if there is no core shift-and this can be found with sonic test-i use it.......I have and will continue to cut up ONLY bad heads....this is how I have learned....its amazing what you can find on many of these heads.....I gather as much info as I can by sonic tests and cutting up only bad heads that are cracked-I just dont use heads that prove to have weak/thin casting walls if sonic tests show this....I wonder if you know what you are dealing with sometime...I just gather as much info and facts about these heads and engines and it seems some REALLY appreciate it some dont....
Not sure what you are going off on here.......do you sonic test heads? How many heads have you built? are you running a bolt in head yet?.....
why does have have to be like this?
some truely enjoy my comments...I thought you did too until recently.....
