small block heads, 4027596 casting # any good??

lead69 said
The last set of 596s I ported for a buddy with 2.02/1.6s flowed 252i and 195e @.500 so they can flow.

I don't have the flow numbers but I changed from my home ported 596s to Eddy magnums which also upped the compression 1.5points and gained nothing at the track - except a lighter wallet.
There a good head.