Well it looks like I was right and both Inlet and Exhaust valves need to be replaced because of guide wear.

So the question to you all is;

What valves will fit these engines?

You can use a 1.94" and 2.02" SBC valve in the 270 and 302 heads, but you'll likely have to use smaller SBC valves in the 228 engine if you can find direct replacements.

Both sets sourced @ Obsolete Automotive.
Egge had guides.


Happy days