The newest "building a slant six" thread

Oh, thanks for clarifying. So I can open up my stock exhaust manifold to 2.5? I am looking at headers, and I have that old Slant six power book, I think we all know about that one right? It has a set of headers and a 4 barrel on it, and I believe in that book they put an "RV cam" in it LOL Not super interested in buying 400 buck and up headers, seems to be a few offered in the under 200 range though.