Chevy Block code
 

Does this code look familiar? I can't find anywhere to decipher it.

https://i.ibb.co/Xb3kgpC/Screen-Shot...8-11-55-AM.png

Looks like Mid to late 70's truck engine.

If it's YQ = 1969 Truck 396 310 H.P. 400 Trans. Look for block cast date.

I thought it was TYQ but I think you are right it looks to be YQ. Kind of hard to read.

Yes, TYQ, truck engine

Lime Book
 

Looks like T 1011 YQ to my eye. Casting date would help answer the question.

‘

Exactly, Tonawanda Oct. 11 w/ YQ 2-digit suffix = pre ‘70 application.
YQ = ‘69 Truck 396/310 M40 as noted above, any VIN stamping/Year digit?
:beers:
~ Pete

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Not that I can tell. That was the extent of the pad number.

I don't know that vin stamping on the trucks was ever a concern ? I have a '69 truck 396 in my '70 Chevelle and I don't recall seeing a vin stamp.