Big Block Cylinder Heads "915 vs 906"
Then somebody knew absolutely nothing about what they were doing.
Here we go again, you love those stock heads? I know, with those huge valves and huge flow numbers, who wouldn't?
I think if you knew my engine builder you'd think otherwise.
So the engine builders that cut 50+ sets of heads in half to learn to port them and still require epoxy or brazing know nothing. Come on... If you go big with these heads they often need epoxy and it differs from one to the other due to core shift and production tolerances. There is a big time engine builder who posts over the bbd.com and I've read his threads on using stock heads and high hp builds for contests etc. I've also built 3 440's.
I know, I know you can make insane power with stock heads... With what compression, heads and cam and how streetable is it?
Bottom line for what it cost to go big with stock heads (porting, vlaves, replacement parts, machine labor..) i'll take an aftermarket aluminum head all day long for more reasons than just flow
