thanks kirk, yes that the one i was referring to.

well, i know that ideally, you want the port/runner volume to be at least equal to the total volume of the cylinder so that when the throttle opens, the necessary air is readily available and waiting to be fully injested.

and intake runner length is more suited to pulse wave tuning or resonant tuning whereas the intake runner diameter is more suited to flow volume and velocity... i know how those play into the whole power curve thing...

just wondering if a im designing plenums with too large of a volume... yes i do mean the chamber where the inlets of the intake runners begin.

the plenums im fixin to use have either a 4" ID or 4.5" ID, the intake runner diameters are kinda big, 1.75". the inlets of the runners are bellmouthed and radiused where they meet the floor of the plenum... then its welded together.

Sean... how fast was Joey's car when it had the man intake? was it sluggish off boost or in the low end?