Which heads?

BsB Duster said
So I am trying to get an engine together for my sons 67 Dart. The original 273 engine is seized after sitting for years, so I bought a good used 1976 360. I bought a summit 6901 cam, performer intake, hooker headers, and speed demon 625 carb. Should I use the 67 273 closed chamber heads to boost compression or should I use the original 360 heads? I have blown up my brain trying to figure this out. I’m not changing pistons or anything like that just want the best bang for the buck. Thanks

If the engine was seized from sitting, are the heads any good? If they need rebuilt, that's going to add up quick. I'd stick with the 360 heads if it was a running engine. That cam isn't much bigger than stock and with the pistons still down in the hole, there's going to be little to gain with the 273 heads. The open heads will flow better anyway, and 360 heads should have larger ports and valves too (I think).