Y-Block head question.

Well guys thought I had this figured out. WRONG!!! Went to look at a Y-Block today, ECG block casting number, ok, '57 truck. Thats just what the guy said it was. Looked all over the heads for the letters ECZ-G, thats what they are suppose to be. Looked between the exhaust ports, under the exhast ports every where externaly. should I pull a valve cover? Oh by the way the only numbers we could find were 6BV. WTH! am I not looking in the right place? Please advise me. Thanks in advance.

Fenderless

 

You're on the intro thread bud, won't get many answers this way.

 

For some good Y-block info, click on Community up top,click on social groups then put Y-blocks in search, there is a group with a lot of guys to help out.