Will the crankshaft and heads from a 1973 Chevy fit 1990 block?

The crankshaft and heads from a 1973 Chevy will not fit a 1990 block. The 1973 Chevy is a small block engine, while the 1990 block is a big block engine. The small block and big block engines have different dimensions and bolt patterns, so the parts are not interchangeable.