Your block is FAR from "used up". Now days replacement pistons can be made in ANY size , +.001, .031,.032 etc. Techcraft is in Redwood City and Doug can do a great job for you . Or take Robert up on his generous offer. I see no reason to replace the block with one from Dart for a 340hp build. BTW you can go as tight as .016 on the intake rockers. The valve see less heat and don't expand as much as the exhaust valves do. Keep the exhaust at .018.
I tried looking up TechCraft and could not find anything. No web page or yelp review. Do you have anything more on the shop? I think I am in need of an engine rebuild sooner than expected.
To everyone else, thanks for all the help and advise.
Recap: I adjusted the valves last week, drove the car around to get it up to temp and still heard the rocker noise as mentioned.
I took the valve covers off and as you can see in one of the pictures there is now water in the oil. It was not there last week.
Also is a picture of one of the rocker arms and the top of one of the valve stems. They are a pretty good representation of all the others.
None of the valve stems show any mushrooming or even enough of an edge to catch with a finger nail.
I'm not sure how to judge the wear on the rocker arm.
In any case it looks like the car is not going anywhere anytime soon.
Thanks again. All advise, insight is always appreciated.
BTW, anyone have the whites from 3 or 4 eggs?