Originally Posted by zipper06

There are really a lot more Chinese casting out there than people are willing to admit. I don't know who made the casting that started this thread, but not many of the head maufacturers have stepped up to the plate on improving their castings. I mean look at it this way, some people are running well over 300lbs spring pressure and .900 lift, this was unheard of a few yrs. ago, that head looks like it could have been cast with the same cores that a steel head would have been cast with, with steel being 200% or more stonger than alum. Plus alum mat'l cost 3 times more than steel, so they are trying to save money on the casting. Even the Chinese castings would be good if they would simply reduce the core size and build the deck and top side thicker. It's the almighty dollar savings, and hoping that no one will run the high spring pressures and the tall lift cams. If i had my way all the alum heads i run would be solid, but i run alcohol and don't have a cooling problem.

JMO

Zip.