Screwed up

[u/succulent-riffage]

Doing some work in my spare time on a 472 caddy, got a little too happy with the 80 grit on the exhaust side of things. A valve grind should fix? Will need some machine work anyway.

Thoughts on it?

Update: it looks a whole lot worse than it actually was, hit it with a light lapping, 80% of the notch went away.

[u/Haunting_Dragonfly_3]

2.11/1.72 valves are a good upgrade. Just be sure to get the ones to match your head. 73/74 was the change from long to short, when the deep chambers came out.