Cylinder head flow - What is crucial in a stocker?

[Paul Precht]

Originally Posted by Stan Weiss

Maybe someone who is doing stock heads will speak up. How far below the actual valve seat into the head can the bottom cuts / angles go? I have seen heads where those bottom cuts went well into the throat area. I don't know if those heads were NHRA legal or not.

Stan

Any machine cuts are legal and if that cut is 85 degrees or so it's going to go deep.

[Mark Yacavone]

Originally Posted by Paul Precht

Any machine cuts are legal and if that cut is 85 degrees or so it's going to go deep.

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[jamie2370]

Mark, that's what most all my heads have looked like till these 416 heads. They seem to have a deeper turn that didn't get touched

[Stan Weiss]

Originally Posted by Mark Yacavone

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Mark,
Thanks for the picture. It has been a while since I saw this head. But from what I can remember there was an area where the bottom cut went at least twice that amount below the seat.


Stan