71 383 - options

These are the 915s I have. When I had my other 383 done at a machine shop they took them apart. Came back with springs, retainers, valves, and spacers in a box. Not sure why the spring areas look different on each head, or the purpose of the spring spacers.
I ended up going with aluminum heads on that engine.

I have the valves and springs. A friend looked at them and said the valves looked like someone spent some money on them, and the springs were hefty, I forget the exact terms he used, he definitely knew more than me.

Do these heads need professional help, or can any idiot, like me, put these back together?

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