BBC cyl heads

[Makinchips]

Originally Posted by Makinchips

Has anyone dynoed a closed chamber head versus an open chamber head?
I have an older friend that keeps telling me it's a 50hp gain.
Since i run a 402 in my bracket bomb and wouldn't mind throwing some more power in it I'm hoping someone on here may have some results

Back to the original questions not straying.
Mark i like the red car in the pic it has nothing to do with the questions posted.