Time for some big block heads.

Bobzilla said

Were these 440-1 heads already worked on before the first time you flowed them?
I don't care to race flow benches, and not trying to start something like that, but I am wondering how these heads performed on your flow benches when tested at various stages, like any velocity that is too high in areas, any dead spots, and any air trying to go back up the port? Not looking for flow numbers, just wondering generally.
I am mostly curious about performance under .650" lift levels with a good valve job but no real port work, since I will probably never build a serious engine.
Thanks for posting this kind of stuff. I enjoy reading anything related to engines, especially since the stay at home orders are still in effect and I am so bored.

Click to expand...

I bought them used and one port was hacked on, not bad but not good. I have a bad habit since I flow sometimes each port so many times to just scribble.100-.800 on a piece of paper and writing the flow numbers on it. So finding those table pages from the first and only time I flowed a stock port (probably around 2004) would be impossible. These heads are pathetic stock. And those numbers were before this bench. My old bench had fluid manometers and I hated it. Calibration would change during the day and to get true numbers there was a formula to favor the weather. Piss on that. If you look at my old flow numbers you will see the port jump up in cfm and go turbulent. Back then I couldn’t probe the port to check speed and find issues as easy as I can now.