Ted,thanks for the clarification. My '42 has a short shaft water pump and 216 blade. I have never had overheating problems and I am pulling mountain grades in 90 degree weather all the time. My COE also has a short shaft water pump with an aftermarket fan blade with 6 blades. It will start to get overheated but only when warm and pulling those same grades. That truck weighs twice what my 1/2 ton weighs but has never overheated to the extent of boiling over or other problems. With a clean block and clean radiator, while not ideal, you may do just fine as you are. The adaptor plate is probably the best way to go. Kent
