These might be mismatch parts
You may be able to determine mismatched parts based on casting date codes.
Your stamped engine serial number, 605
is the date the engine was assembled.
I'm confused because I thought 6 = June.
Your block casting date code should be located near the 3837004 block casting number. Example - E127.
Your head casting date code is directly across from your head casting number 3835913. Example - D196.
Post the date codes and maybe we can help.
