Close Chamber or Open Chamber Heads?

Even with a positive deck height piston stay FAR away from the Ede 340 head.

Ask guys like, RAMM, Brian at IMM, MRL, IQ how they would do it. I doubt any of them would choose the open chamber over a closed chamber with a zero deck or slight positive deck piston set up. Only time to take an open chamber is if the piston is so far below deck that achieving quench is not possible.

Pick your parts, pay your money.

I'm with yea here. Those stock 340 slugs are a bit above deck. I'm not sure if I would want a thick gasket and a open chambered head. I did have to do just that on one long ago with a 360 that had +.012 slugs and the heads were the closed Edelbrocks. To solve the problem I used a .050 (IIRC) thick gasket.

I forget where the OE 340 slugs sit above the deck.