[HawkX66]

Thanks a lot John. I'm actually just heading to the machine shop now. That's the first time I've heard that. What you're saying makes sense, but I've talked to quite a few guys that have flowed these heads with the 2.19s and they said they flowed well. I don't know what to think because obviously I don't know better either way. I have a 4.155 bore. It's a 40w bored .030 over.