Have any of you head guys done side by side tests comparing 2.25" to 2.30" intake valves? Lets assume a very efficient ported head with around 325 to 330 cc intake runners. I am particularily interested in flows above .400" lift. Just curious on how much it is worth.

Wett Vette,

There is about a 4% or 17cfm difference at .600

Just another tidbit of info. Thanks.