65 block casting number

[John S.]

My 65 300hp 327 has a block casting # 3782870 and casting date of I14 which I believe is Sept 1964.
The cars GM official production date is Dec 2, 1964.
My question, is the block date too far from the cars production date for judging purposes?
Thanks so much in advance for any help.
John Simon (member 41628)

[Joe L.]

Re: 65 block casting number

My 65 300hp 327 has a block casting # 3782870 and casting date of I14 which I believe is Sept 1964.
The cars GM official production date is Dec 2, 1964.
My question, is the block date too far from the cars production date for judging purposes?
Thanks so much in advance for any help.
John Simon (member 41628)

John-----

The date is fine for your car and quite typical.

[Mike E.]

Re: 65 block casting number

I pretty sure there was a GM work stoppage (Strike) in 1964 that might account for the large spread. The JM allows 6 months difference.

Mike

[Mike G.]

Re: 65 block casting number

I pretty sure there was a GM work stoppage (Strike) in 1964 that might account for the large spread. The JM allows 6 months difference.

Mike

That's right. They went out on 25 September. Not sure when they returned, but it was before the Thanksgiving holidays.

[Wayne M.]

Re: 65 block casting number

That's right. They went out on 25 September. Not sure when they returned, but it was before the Thanksgiving holidays.

Going by S-body trim tag stampings, D6 (November 6th) was when they reported back for work.

[John S.]

Re: 65 block casting number

John-----

The date is fine for your car and quite typical.

THANKS so much Joe for the quick reply. That is really good news.
And thank you for ALL that you contribute, we are grateful.

John Simon

[John S.]

Re: 65 block casting number

Thank you Mike, Mike and Wayne for your responses and the additional information.
Very much appreciate your quick replys.
John Simon (41628)