WTB... 327 Block

[67 cst swb]

Originally Posted by jmader

Would this one work?

http://www.ebay.com/itm/3892657-C-10...a9b22c&vxp=mtr

Well, Yes...
But that shows me some interesting info.
It shows a V 1104 YH with a Block Cast Date K 3 6
which tells me the block was cast on Nov 3rd and assembled Nov 4th
So, maybe I should be looking for a much closer to Dec 20th 1966 cast date
Hmmmmmmm... very interesting that the cast date and assembly date are that close.

So... I am revising my search...
I am now looking for a Mid-Dec cast date block.
Ideal find would be a 3892657 block cast date of L-10-6 to L-19-6

Jmader, thank you so much for finding me that info.

[jmader]

I think these things were pretty random. The 327 I found for my truck has a casting date of E-4-6 but the engine pad is stamped F0505YM (the casting #3858174 was not used in 1966 vehicles) so this block sat around for over a year before it was used in a truck. You just never know

[67 cst swb]

I agree, I think they were pretty random.
But, If I can stumble across a 3892657 block with a cast date of between L-10-6 to L-19-6
I think it would be a no brainer in not having to explain the huge date difference.

[67 cst swb]

I am still looking for a 3892657 block cast date of L-10-6 to L-19-6

[SS Tim]

Originally Posted by jmader

I think these things were pretty random. The 327 I found for my truck has a casting date of E-4-6 but the engine pad is stamped F0505YM (the casting #3858174 was not used in 1966 vehicles) so this block sat around for over a year before it was used in a truck. You just never know

Since the block (3858174) was used from 64-67 and a YH coded block is correct for a 66 C20-30 w/M49 (TH400), I'd say its originally out of a '66 truck.

[SS Tim]

Originally Posted by 67 cst swb

Well, Yes...
But that shows me some interesting info.
It shows a V 1104 YH with a Block Cast Date K 3 6
which tells me the block was cast on Nov 3rd and assembled Nov 4th
So, maybe I should be looking for a much closer to Dec 20th 1966 cast date
Hmmmmmmm... very interesting that the cast date and assembly date are that close.

So... I am revising my search...
I am now looking for a Mid-Dec cast date block.
Ideal find would be a 3892657 block cast date of L-10-6 to L-19-6

Jmader, thank you so much for finding me that info.

Since I know you are not looking to stamp a block don't fixate on a specific casting number or casting date range. Use those to help find a correct or very closely dated block based on the engine assembly number. But it does confirm what I have been saying. Your correct block with the assembly code V1220YH
could very well have a casting date as late as L 19 6 and it is probably a 3892657 casting number.

If we locate an original engine on or very closely before that assembly date it will then be a decision if its "close enough" or a reference for the casting numbers and dates of all the major components as would have been used on your vehicle to futher narrow the search.

[jmader]

Originally Posted by SS Tim

Since the block (3858174) was used from 64-67 and a YH coded block is correct for a 66 C20-30 w/M49 (TH400), I'd say its originally out of a '66 truck.

What's your source that says the YH was used in '66 trucks? I could never find anywhere that said that. You're probably right though that would explain the big date gap.

[SS Tim]

Originally Posted by jmader

What's your source that says the YH was used in '66 trucks? I could never find anywhere that said that. You're probably right though that would explain the big date gap.

This is from the 46-72 Chevrolet series 10 20 30 truck parts manual dated 5/79.

[jmader]

Oh sorry my block is a YM suffix not YH. I don't see the YM in that list. Do you have any more info on the YM?

[67 cst swb]

Originally Posted by jmader

Oh sorry my block is a YM suffix not YH. I don't see the YM in that list. Do you have any more info on the YM?

I am mostly interested in block with casting number of 3892657
and a casting date of L 10 6 to L 19 6 (rear pass side of block)

[67 cst swb]

Originally Posted by SS Tim

Since I know you are not looking to stamp a block don't fixate on a specific casting number or casting date range. Use those to help find a correct or very closely dated block based on the engine assembly number. But it does confirm what I have been saying. Your correct block with the assembly code V1220YH
could very well have a casting date as late as L 19 6 and it is probably a 3892657 casting number.

If we locate an original engine on or very closely before that assembly date it will then be a decision if its "close enough" or a reference for the casting numbers and dates of all the major components as would have been used on your vehicle to futher narrow the search.

So, are you saying I should not be searching for a L 10 6 to L 19 6 cast block and that I should be looking for a V1220YH stamped assembly code block?
I was kind of thinking of getting a block that "could have been correct" simply due to casting date. Of coarse... ideally a V1220YH would be awesome. I guess I was just not dreaming that big.

And, based on the sheet above... How did my 1967 1/2ton have a YH code?

[67 cst swb]

ttt
I am still looking for a 327 stamped V1220YH (front pass side in front of cyl head) or
a 3892657 block cast date of L-10-6 to L-19-6