62 engine date code

[Rick J.]

I have a date code in the engine block that begins with J. According to Nolan Adams Restoration Guide Vol 1 page 392 the letter I was dropped by GM because it was too close to the number 1. Therefore a J code is Sept. Am I correct? Thanks for any help

[Joe L.]

Re: 62 engine date code

I have a date code in the engine block that begins with J. According to Nolan Adams Restoration Guide Vol 1 page 392 the letter I was dropped by GM because it was too close to the number 1. Therefore a J code is Sept. Am I correct? Thanks for any help

Rick----

The letter "I" is not used for most STAMPED date coding. However, it is used for most CAST date coding including engine blocks. So, the letter "J" on an engine block cast-in date code represents October.

[Rick J.]

Re: 62 engine date code

Oh ok. How would that work then if a casting number date is later than a stamped date, they happen to be month different ? Im confused. Thanks so much for any help. The.casting date using the J as Sept and the stamped date is Sept that would be perfect. Ant help would be appreciated.

[Jim D.]

Re: 62 engine date code

Oh ok. How would that work then if a casting number date is later than a stamped date, they happen to be month different ? Im confused. Thanks so much for any help. The.casting date using the J as Sept and the stamped date is Sept that would be perfect. Ant help would be appreciated.

It could be either a mistake at the factory (unlikely) or an uninformed re-stamper.

[Rick J.]

Re: 62 engine date code

Thanks for the reply. I'm trying to sort this all out. I appreciate the help. How would NCRS judge something like this?

[Barry H.]

Re: 62 engine date code

Joe, I have an origional 62 327 340hp block with a stamped date for Nov 21st, FII2IRE, 3 "I" characters.
Barry Holmes

[Joe L.]

Re: 62 engine date code

Joe, I have an origional 62 327 340hp block with a stamped date for Nov 21st, FII2IRE, 3 "I" characters.
Barry Holmes

Barry------

For stampings, the character "I" was often used to represent a "1". I don't know of a case in which the character "I" was used to represent an actual letter "I".

I would decode yours as November, 21 (i.e. 11 21). So, in your case, each of the "I" represent "1"