Hello, Just out of curiosity, would anyone happen to have the measurements of the intake and exhaust flange bolt pattern for a Pontiac 239? Looking to have some steel flanges cut to make an intake and some headers. Thanks!
You might try this website for inline engines. I don't know if it costs to join or not. I am not a member, yet. https://www.inlinersinternational.org/
Unfortunately it looks like a multipart gasket, so it may be difficult to match the dimensions between surfaces. Worth a shot, worst case I'll pull the manifold and measure myself then post here for future reference.
I’m Inliner#35. Joined in the 2nd month…I don’t know anything about a fee. Sorry no info on a Pontiac.
For what it's worth, I believe that Hell's Gate Hot Rods sells the flanges you're considering making.