Hughes big mouth heads
The below is the reported flow numbers by Hughesengines.
Be aware of the flow bench they use which can be found at there site. Not all flow benches flow the same. They should be a tool used to show before and after work is done and not matched against another type or kind of flow bench including the same exact bench using the same program to calculate the air flow. Even the same flow bench will show different numbers on today’s hot and humid day and tomorrow’s cool and crisp day with humidity & spheric pressures differences.
The numbers on the far right of each on each column for the intake and exhaust are the Big Mouths numbers. They are labeled as such, “Big Mouth.”