cubic inches vs. head flow vs. rpm
@273 Gyes to a degree depending on who your dealing with or more importantly the thickness of there wallet in answering the question, “How fast can I go?”
I’d rather point to speed talk and review a few topics there as I’m not so exacting on the needs of specific “Race engine” needs. While I can spec and build a small block on lapsed to 750 hp, doing it in person yourself is another tale to be told.
(AKA Lie about! LMAO!)
There is a formula for needed cross section as well as cylinder head flow, valve sizes etc for a given C.I.D. Any of the parameters are bendable of another is flexible enough that cover the others short coming.
This can be a fun topic to discover. While I have read about it, I’ll keep my nose out of it and lips sealed on it. For most people, the aftermarket has a good general selection with head porters to modify them for the “more.”
I would freely give away any information on what I know. I stand in a spot where I won’t loose any money or sleep over it. It’s just the higher race end particulars I’m not familiar enough to share with confidence on be right for a particular application. I’d rather clam up than make a mistake.
So far, there are good books on the matter. A few videos that show differences and a few members to ask in THERE combo changes to start getting ideas.
A good example of good head vs better head to s the engine master video on the sbm stroker w/ported Edelbrock heads. You can see how it benefited really well with the ported heads.
Id like to see a set of “bigger heads” on top 408.