Thank You for all the information.
It was very helpfull.
I did not know a 292 crank shaft would fit in a 230 block. If im understanding the information, seems all my 250 cid parts should fit on this 230 cid block. And my 250 head should bolt right on with no problems.
Qestion! The blocks back in 1960's better castings than 1970's? Or is it all the same metal?