I can't give you an exact year based on casting number alone because Chevy used that casting for several years from 1969 through the mid 1970's. It's one of the better (and more common) 350 block castings. It can be either 2 or 4 bolt main, depending on what it was originally used for. As long as it's in good shape, it's a great block to build.
That block was used from 1968 through1985.
You will need to provide the suffix code from front on the passenger side head of the engine.
The Chevy engine with that casting number was made in 1993.
what year is a 350 block with the stamp GM8970010
The Chevy engine with that casting number was made in 1993.
engine small mount
1969
1987
1969
That # was used from 70-76.
1996
i called the Chevy dealership and they told me the year