That and you dont know haw that head was handled over the years. Was it stored standing up, did it ever fall over and possibly crack? I know its nos, but if that is rust on those springs and retainers, they are not worth saving. Same for the valves. If they are really rusty, they will likely need replacement. Frankly, to use that head, if it passes magnaflux inspection, it will need a standard going over just like any other rebuild. On the other hand, you have a head that is not full of trash and has not been messed with so should build rather nicely.
Last edited by Dragsix; Mon Jan 10 2022 02:14 PM.