Interesting that almost every performance cylinder head has chambers like all the closed chamber small block heads Mopar ever produced. Closed chamber must work.
Absolutely not true. Closed chambers ,yes, not "like all the small block heads mopar ever produced", that part is false.
Take and stick a little cast pecker on the peak of the 273 heads and you have a relieved version of the 302 that wont crack.
The little peak isnt necessary, they rid that for a reason. Anyhow, thread erosion alert.
