What temp does your fan kick in/out? How much fan is sticking out from the shroud? Sucker fan should have 2/3 toward rad and 1/3 toward engine.
Do you have an auxiliary header tank for the radiator?
@ crsmiffy : fan kicks in at 88° C ( 190° F ) and there is no auxiliary radiator tank. The fan is sticking out approx. 1/2 inch and the proportions are around 2/3 to rad and 1/3 to engine. The pic below may help.
