Understanding Engine Assembly Plant Codes, VIN stamps and more

[mtull]

Another sample of mine...

I see the block was cast May 14, 1969 and assembled November 3.  Is the 'B' seen in your pic and in the one 6bblgt posted indicate the block was assembled at the Hamtramck plant? 

[cuda hunter]

Here is a warranty or service block that I own.  No tag to determine it's origins.

Any thoughts? Or explanation for the S stamp?

[6bblgt]

S = Service

[6bblgt]

Is the 'B' seen in your pic and in the one 6bblgt posted indicate the block was assembled at the Hamtramck plant?

all muscle car era 383/440s were assembled at Chrysler's TRENTON, MI Engine Assembly Plant

I believe the random "A" "B" "C" stampings seen on some top pads are the builder's reference to the piston bore sizes that are also seen painted on the sides of blocks

[mtull]

Interesting differences in the stampings.  This blocks casting date is 11-12-69

[cuda hunter]

S is for service.
So, there is a W stamped on the pad above the S.
Would that signify a service block that was used for warranty?
Or is that just a builders stamp that is inconsequential? 

[6bblgt]

"WT" is for water test - pressure testing the block before assembly

[cuda hunter]

Thank you.  I see it now. 
Your wealth of information is astounding.