Magnum replacement heads

Thanks, I appreciate the input! I am not sure why there is a big step above the valve seat, almost like its counter bored down to far. It shrouds the valve pretty bad. Guides are pretty loose too, looks like .316, and the stem is .312 on the dot. I can fix the issues with guide liners and some seat work, but still concerned about the short turn

That’s why they make grinders....... so you can fix that stuff :usflag: