Open Chamber Heads vs Closed Chamber Heads....

I went 9.74@2850 pounds and my son went 10.08@3200 pounds with a set of damaged open chamber (340 style) Edelbrock heads I bought for 400.00 and ported. Did I want open chamber heads? No. But the price was right. Between flat top pistons, a stock deck height block, Felpro gasket, and open chamber head I left a lot on the table. Do they work? I would so yes they can work.