i have a 4.6 romeo engine in my f150 and i broke it down and found out that my intake gaskets were weak and i believe it was allowing coolant flow down into the heads through the intak valves. but anyways i have my heads off and the head gaskets look fine. i bought head bolts $150 and a headgasket set for about $200 and i planned on getting my heads machined/milled down anyways. has anyone here had this done already or can anybody give the pro's & cons. should i get them macined or not. and if i do get them machined will i have any problems with them?

thanks guys i really appreciate all of your help and info in advance.

 

for your information it now has 177k miles on the motor.

 

Yes, get them surfaced. Have them remove just enough to make sure they are flat.