Was down the basement last night looking for parts and part #s and noted a bit of an oddity as far as one of my blocks was concerned. I was trying to match up block casting dates with head casting dates.
The block of concern is a 1963 "814" casting with rather large Julian dates of the RH side of the rear stating what appears to be "I 7". Not "1 7" but with an "I". It's pretty rough in that area of the block, so I compared that julian code (which I thought would be all numeric, with no letters) to other blocks I have on hand. The earlier 1961-2 blocks all seem to have a smaller tag using the mo/dd/yr configuration, and they are (in the case of my blocks) all placed in the middle flat section of the back of the block (not the RH side like later blocks?). Then I looked at several 63-64 blocks and noted a different casting date, at least in terms of size and alphanumerics. These were larger in size than the 61-62 castings, all place on that RH side of the rear of the block, and all were strict numerics, no letters.
So I go back to my 1963 "814" block and it really does have a larger "font size" than the other 63-64 blocks, and there's that darn "I" sitting there . Maybe it is a one and a seven, which would put that mid January 1963???
This is a Tonowanda cast block, TO 223 QB, with a clear stamp to the left of the suffix code having a "J225927". Is that the Janesville plant, where it was mated with its body? So what was the likely born on date for the casting or assembly of this engine?
As always, thanks for your consideration. Sorry to be overly concerned about numbers. Maybe the guy with the original vehicle is around, who knows?
Cheers,
TomK
The block of concern is a 1963 "814" casting with rather large Julian dates of the RH side of the rear stating what appears to be "I 7". Not "1 7" but with an "I". It's pretty rough in that area of the block, so I compared that julian code (which I thought would be all numeric, with no letters) to other blocks I have on hand. The earlier 1961-2 blocks all seem to have a smaller tag using the mo/dd/yr configuration, and they are (in the case of my blocks) all placed in the middle flat section of the back of the block (not the RH side like later blocks?). Then I looked at several 63-64 blocks and noted a different casting date, at least in terms of size and alphanumerics. These were larger in size than the 61-62 castings, all place on that RH side of the rear of the block, and all were strict numerics, no letters.
So I go back to my 1963 "814" block and it really does have a larger "font size" than the other 63-64 blocks, and there's that darn "I" sitting there . Maybe it is a one and a seven, which would put that mid January 1963???
This is a Tonowanda cast block, TO 223 QB, with a clear stamp to the left of the suffix code having a "J225927". Is that the Janesville plant, where it was mated with its body? So what was the likely born on date for the casting or assembly of this engine?
As always, thanks for your consideration. Sorry to be overly concerned about numbers. Maybe the guy with the original vehicle is around, who knows?
Cheers,
TomK