Incorrect, correction

I do not believe that flowing the heads at a lower depression(within reason) will produce out of whack numbers. Incorrect calculations certainly will. When we took Wes Littrel's A-460 heads down to Charlie's place and compared his numbers with the ones from my Superflow 110 they agreed nearly EXACTLY on the exhaust and mine were more conservative on the intake side at high lift. I feel that the difference was strictly because of the bore adapter I used(4.250 with the head "fudged around" on there). I would bet if I had a 4.600 bore diameter to test with the numbers would have been very very close. On my bench when I flow test I use the FlowCom for sensing pressures and tempertures and then I use a computer to collect and correct the data.

The real advantage of a larger bench is that it has higher resolution when flow testing large pieces. The Superflow 110 will only detect changes of about 1% whereas the larger Superflow 600 etc will detect much smaller changes .5 or even .1%. That's it's advantage.

It's also important to remember that flow benches were never intended to produce numbers that were identical from bench to bench. What they were designed to do was show if you're gaining or losing flow. If you gain 5% on a Superflow 110 you will also gain 5% on a Superflow 600 given the same testing proceedures. Are the numbers the same? Not necessarily, they will be close but the percentages certainly will be...