3969854 block question

[nuch_ss396]

The '854 block was a 396 ( actually 402 ). No Corvette
ever received this block from the factory.

Steve

[Hotrodpaul]

The 854 block was first cast around July/Aug 1969, replacing the 272 casting. I have and 854 CE block in my 69 Camaro dated H 69 (Aug 69).

Paul

[DSYenko]

Hotrodpaul you are at the place that stumped me,the EG and D 7 7 would be Chevelle correct for 67-68 but the fact that it's a 854 block cast in early 67 is what through me?I also swear the stamp is IEG and not 1EG.It does have the big cooler outlet above the filter so im sure it's a 4 bolt but even if you forget the front pad the D 7 7 casting on a 854 block seems waaayyy early!

[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.