Hello, New Guy from Boise, Idaho interested in old hemi engines and old hotrods. I have an old 392 hemi and a set of "555" iron heads from a 1955 331 that I would like to build into a blown gas engine and install into a Henry J. I was led to the forum by internet searches on these subjects mainly information on the Chrysler hemi and running nitro. I'm not real knowledgeable on these subjects, but I am here to learn from those who are.