Take a look at this U.S. Radiator link. http://www.usradiator.com/radiators/chevrolet.html?cat=630
U.S. Radiator shows 1941-46 radiators to be 22 1/2" by 17 1/2"(core). 1948-54 radiators to be 20 1/4" x 19 3/4"(number of different cores with slight differences in size). Does not sound like a close fit.

Last edited by Donf; 05/29/2011 7:50 PM.