casting numbers are thin for a lot of the small block production, but that's not really specific enough anyways.
you want to find the EIN ( variant of the VIN that does not include model and body style info ) and Engine Code ( two letter ) stampings and that will tell you everything you can find out about the original application and specification of the engine.
do you think the engine is original to your car?
what year car / engine do you think it is?
what displacement do you think it is?
The way to crush the bourgeoisie is to grind them between the millstones of taxation and inflation.
Government schooling is about "the perfect organization of the hive."
H.H. Goddard, Human Efficiency (1920)