The GM block casting number 3789817 is associated with a small-block V8 engine produced by General Motors, specifically used in various Chevrolet models from 1969 to 1980. This casting number typically indicates a 350 cubic inch engine, but it can also be found on some 305 cubic inch versions. The block is made of cast iron and is recognized for its durability and performance potential in both stock and modified applications.
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