Do you know in what bore size the head tested at?
Was there any mention of the port going turbulent?
Did the head require epoxy?
Did you mention your valve sizes?
I wouldn’t be to upset. That’s enough flow right there for some serious HP. Plus the head ports are still moving some pretty good air past the peak. If you were so inclined to continue lifting the valve, you will still be making more power.
The only 2 drawbacks to the W5 head is the possible poor casting ether turning the head into water sprinklers (leaking) and/or not being able to be ported out to some of the reported superb flow numbers that have been done. Then the expensive rocker arm set up even though it is seriously superior to other offerings, which has excellent dividends, it’s just pricey as I said. Though if it is a race car, it would be worth it. Street car? Ehhhh, owner’s call.
Again, I understand being disappointed with the flow results but they show well enough for some *** kickin.
