Aftermarket cylinder head debate - who's the best

As others have mentioned. That figure is easily achievable with stock heads (even the small valve) without any work. I've got J heads on my 340. There's a local headshop/raceshop that can do all out porting, cleanup, valve work, etc. For about 1000. That should get me in the 260+ CFM flow area. Good enough for 550 (potentially more) horsepower. If I want it in the future.
Sang this song a lot. Never heard that he end of how junky and worthless OE iron is and ONLY a Edelbrock head should be though of to use.

tough question but in the end I think the eddy's is the best "all around" choice. Best bang for the buck would be some ported j heads.
Agreed. OE irons are cfm limited, stock or ported, but can still be affordable and produce!
Heads are at Shady Dell getting ported and polished chambers....View attachment 1715013765 View attachment 1715013766
PM coming.....
Best of luck with the endeavor!