Block Casting Numbers

[69z2x4]

The casting date could have been changed also. I am sure the 8 in the J-10-8 is right. The 10 looks suspect. Thanks for all the replies.
Sherm

[3macs1]

Hi Steve:
We are going to have to rewrite that book I think for them.
See I am still 100% convinced they made a 4 bolt 512 oval port since I sold one undrilled for oil cooler and seen two pictures of others since. The Judge may say no but I know now what I had. With this 854 block the first link would not suprise me to be wrong but not the nastyz one or I have found at least three other lists the same.I still have some 402 and early 454 blocks that are not 512 but they are buried.
I will see what else I can locate also and between us we will figure this one out. take care
Joe

[nuch_ss396]

Joe,

I would love to meet anyone ( still around ) that worked at the
Tonawanda facility one machining operations for the big
blocks. I've got tons of questions I'd like to get answers
to. Anyone know if any of these guys are still around?

I could imagine a block being drilled & tapped for 4-bolt
mains if someone just goofed. Can't imagine it would hurt
anything. But I'm positive that all the SHP blocks, which
were 4-bolt mains, were also drilled for the external oil
cooling provision.

I'd be shocked if an original SHP engine was found with
4-bolt mains and no external oil cooling provision.

Steve

[3macs1]

Would be nice to talk to someone agree. I just know I had one out of a big 70 impala of all things and there was pictures of two more posted on this site after.I thought I sent them to you. One was a marine engine but the other was not.

[69z2x4]

STEVE; Have you ever talked to any one that worked in a GM plant back in the day? My brother-in-law worked in the Norwood Plant in 1969 and most likely assemdled some of the cars we talk about here. He was a Marine in NAM in 67. He does not want to talk about that either.

[TC]

Pretty interesting stuff.

[nuch_ss396]

[ QUOTE ]
STEVE; Have you ever talked to any one that worked in a GM plant back in the day? My brother-in-law worked in the Norwood Plant in 1969 and most likely assemdled some of the cars we talk about here. He was a Marine in NAM in 67. He does not want to talk about that either.

[/ QUOTE ]

Sherm,

No, I haven't. But like I wrote earlier in this thread,
I'd love the opportunity to dig a lot deeper into this
subject.

[69z2x4]

Thanks for all the input guys. I don't know if i will ever figure this one out. 396?85? date??8 4 bolt main, tall dist boss. Sherm

[3macs1]

Any chance of posting a few pictures of the dates etc???