well, I been having water mixin in my oil on my 1990 5.0 gt and i took the heads off got em tested and he said he put about 50psi to em and they didnt leak a bit so.. what else could it be? i baught the car from a guy i know and he said a lifter clapsed(sp?) and he had to put another one in there and after he put it back togeter he was lettingit run and it started having white smoke so he checked the oil, it was mixed, he chagned the oil and it still did it... he said it could just be that he put the intake gasket on wrong or something, but he did use a sheet load of blue silicon on it, like he was trying to make his own or something lol. i got new head gaskets and intake gaskets now, what else should i look for before i put it back together? could it just have been the intake gasket? the motors brand new with 5,800miles on it and i checked all the cyylinders and all that and there not cracked or scared that i can see anyway. any imput would be great. thanks yall for answering all my questions for me! ya'll helped me out alot in the last few weeks! :SNSign: