Quote Originally Posted by Henderlong View Post
K heres my mock up. Dimentions are exact. Im not sure how i want the outside too look yet?
Like i said before. the pipe will be flared so that the outside diameter fits snugly inside the flange.
The bottom edge is only important for plug clearance, and then mainly for angled plugs which can be a pain with some headers. If you're making them out of wood first you can check plug clearance and tweak if necessary, right? Telling us that you're a student with access to the school tools and the blessings of your professors/shop manager brings some sanity to this thread, at least for me. It's a great project given your situation

PS - on the welding I looked at Don's thread http://www.clubhotrod.com/forums/sho...threadid=46852 and Hedman does theirs the other way, letting tubes protrude on the head side, welding a solid bead and them machining that flat. You would at least need a belt sander large enough to do all four ports at once, if not a mill to keep it flat I would think. That keeps the front side cleaner and gives a little more room for header bolts on the flange.