Not impressed by the article:
a 350 engine multiplied by a 5,500-rpm redline, divided by 3,456 equals 557
That's for a single-plane manifold, still gets repeated every 5 minutes. Dual-planes can be much larger, as can vacuum secondaries and spread-bores.
(power valves are) available in different sizes to match the flow requirements of the engine.
They're all the same size, and they don't match any flow requirements. Ooppsss - does he know what the PVCR does?
He sounds like someone trying to re-write someone else's article, but doesn't know how the carb works.
