Let's Build a 416 with Cast Iron Heads and Manifolds

I’m going to follow this closely… I have 2 340s in need of doing a stroker on….

You sure you don’t want to do some aluminum heads? Painted they look just like stock heads… The speed master CNC heads works great and will cost lots less than you’ll put into the stock heads to make them flow the same.
Speed master heads look nothing like a factory head.