3969854 block question

[Mr70]

Try tapping that casting date of D 7 7,and cast part # of 3969854 gently with a metal object to see if anything like an epoxy cracks off..I have seen this before as an attempt to deceive.
If nothing happens,focus on that blocks pad stamping.
Do the broach marks & stampings look authentic through a Linen tester?..I don't see an IEG suffix used in any Chevrolet BB applications.

[mockingbird812]

Rick,

The "I" in IEG is part of the date (i.e. 042I or April 21st) not the suffix code as far as I understand things.

[Mr70]

That's what I think also,just wanted to be clear.

[DSYenko]

I'll try that but i would have thought that if a guy was going to try to fake something he would have been smart enough to make everything jive,if it wasnt for the 854 the other two do work.I'll try chipping lightly at it, if all's normal i must have a prototype 854 block,,just kidding.