Cylinder head flow - What is crucial in a stocker?

[Glenn Briglio]

Originally Posted by Billy Nees

Hey Yac, what do you think it's gonna take to make THAT^^^ look "stock"?

Special medicine..........

[Adger Smith]

Correct Velocity, Velocity, Velocity
Flow is always talked about & highly sought after, but
the correct Velocity is what accelerates the engine/vehicle and is seldom mentioned.
Just my .02 for free.

[jamie2370]

Originally Posted by Adger Smith

Correct Velocity, Velocity, Velocity
Flow is always talked about & highly sought after, but
the correct Velocity is what accelerates the engine/vehicle and is seldom mentioned.
Just my .02 for free.

THIS^^^^ Bigger does not mean better.

[older racer]

harold bettes, stated , port shape and velocity is everything, don't get hung up on port flow ( cfm).

[HP HUNTER]

I think when your talking about Stock and Super Stock heads you only have a smaller than optimum cross section on most heads anyway, and moving the power up is always your goal as an engine builder. Heres another thing Harold Bettes very often would also say: "It always comes down to flow" And I agree when your talking about a stocker.

[FED 387]

X 2 Velocity

[Bill Diehl]

When the lift is only 2,3 4 or .500 flow is everything...its the _"venturi" effect that speeds up the velocity...when the lift gets to be 7,8 .900 and above the focus is on the velocity and cross section, not flow because the valve lift outpaces the port...in other words it's all relative and stockers are not supposed to alter the ports so the valve job is everything it's the only way to get an increase of anything...legally...my Cleveland heads that I no longer own, they moved 328 at .500 and 349 at .550 and they were legal heads , I taught the owner that owns them now how to do it and he achieved the same results...they fell off like a rock above 600 by design