312 main bearing caps

[Jay in Mass]

I forgot what letters are stamped on 312 Y block engines.
Thanks in advance.

 

[scicala]

ECZ is cast onto the main bearing caps for 312's.
'56 and '57 292 and 312 blocks also had ECZ cast on them.
272 and 292 main caps Had EBU cast on them.

Sal

 

[Jay in Mass]

Sal
That's exactly what I was looking for. At 83, I'm starting to be a little forgetful.
Thank you very much Jay