#4448308 heads have any potential?

dodge freak said
Higher compression helps push the exhaust out. So yes on the street with lower compression the exhaust would flow much better. But what about race motors with 14 to 1 compression? This is where the older heads ported right can outperform the 308 heads with those too large pushrod holes that blocks the flow.

Remember the bigger the cam and rpms the more a large intake port helps. The 308 intake ports are restricted more than the older heads.

moper said
High compression and/or "race engines" would be incredibly foolish to use a head like this. If you're trying to get 280cfm from old iron it better be a labor of love or to fit class rules. Because there's no reason to use them asied from those two.

OMG! Moper, you took the words right outta my mouth.

OK, Dodghe Freak, unless class rules dictate this heads use or your just a wild and crazy nut like a few of use here, theres ways around these issues and you have to be cresative on how it's done. Theres a few angles to attack this on. Cam shaft profiles/timing events need to be custom taylored for use of heads like this. 14-1 on a iron head is a real serious effort and seriously, one that I have not heard of before since super serious efforts like this are rare due to the cost of everything from start to finish never mond a campaining.

(Sorry about the run on sentence)

Also, creative head porting, angle milling and big tube headers, huge valves help.
Redesigning the port is the ultimiate direction to take. And cost.

At this level, it doesn't matter what head you have, it's gonna get torn up and redome like clay scultures.