3969854 block question

[DSYenko]

There are still heads on it so i have not idea what the bore is at this time,i'll keep digging!

[DSYenko]

I dont think anyone is ganging up on me but i do think back a few years ago when i drug home a pretty rough 81 Camaro out of a towing yard in California.That was when i located this site and had several nay sayers as it had a early build date ect ect.Come to find out it wasnt just a Yenko car it was one of the 2 or 3 prototype of the 18 Yenko Turbo Z cars.I learned long ago with this car stuff never say never.Id like an expert opinion on that front pad and broach marks and the stampings. Thanks again guys

[Rick H]

The partial VIN stamp looks all wrong. The one (1) has no foot, the three (3) has a rounded top, the nine (9) has an open top, the four (4) is closed. I've enclosed a picture of a 1969 stamp found on ebay (credit for picture goes to original poster). I really do not think they changed the font style.
No 854 block in 1967.

Rick H.

[DSYenko]

I have atleast 2 more 854 blocks back in storage i will check and compare.I also have a 66 961 block i will compare to see if fonts changed , Thats for the opinion

[DSYenko]

I just got thinking it's an L78 375hp block regardless of the rest in question beings it's a 4 bolt !

[Mr70]

It looks like there was a 1 ground down after the 7,indicating a 1971 Casting date on this #854 block.
You said it has the enlarged opening for the external Oil cooler,but I would like to know if it really does
indeed have 4 bolt mains by removing the oil pan.

My .02 opinion
The CON VIN pad stamping doesn't look bad,but is questionable as well.It's not upside down either.
Someone possibly ground of the 1,possibly enlarged the External Oil cooler opening,and restamped
the pad to reflect the 1967 Chevelle-Elco L-78 vehicle it went into,made at the Kansas City Plant.
I feel it's a 1971 cast #854 block with two bolt mains originally.
I've yet to see one cast after 1970 that did.

[DSYenko]

Had a couple miniutes to go look at some other late 60's big blocks i have including the 69 L78 Chevelle i have in storage and this is what i found.The 3's were rounded on top,the 7's back was bent,the 4's were closed and the 1's didnt have a foot just like the the stamping on the block in discussion.
It looks right to me!I didnt buy this engine because i needed it,i bought for what it is and hated to see it get torn up in a race car.