1946 and 1948 Ford AUTOMOBILES with the 59A engines...the cranks are interchangeable. If the '48 crank came out of a truck-type 8RT engine, then no...that crank is different in that it uses different-type insert bearings, and the oiling holes on the throws will be different to accommodate such. 1948 trucks got the newly-designed engine one year earlier than the passenger cars did. DD