so cant figure out what the correct fan should be for 68 400HO 19"? no clutch fan? normal rotation? any help would be great. I am using the stock fan shroud but am replacing the radiator with a 3 core aluminum to protect my investment in the engine. any link to a source to buy from would be great
The spacer may need to be swapped for a different thickness if you are changing the radiator out. I think the rule of thumb here is that the fan blades should be 1/2 inside the shroud, 1/2 outside. Do you know if your stock shroud will work with the aftermarket radiator?
Ok so why would a fix d fan be 19" tip to tip and a clutch fan be 17" tip to tip? Seems like you would lose a lot of the efficiency of the fan if the blades let too much air between the fan and the shroud. Unless the shroud openings were different size as well, which I don't think they were.