I don't know if I can answer your question.
I snapped a picture of my car, 1980 TA, originally with a NA 301, now a Pontiac 400 and Cold Case radiator. Using the original 301 clutch and fan, there is a good 2 1/2 inches between the front of the clutch and radiator. Something worth mentioning, my original radiator was just a thin two core. The Cold case is also just two cores, but they are oval shaped and tanks are thicker/deeper. The factory rubber insulators used to mount the radiator were two small, I had to purchase the correct ones from Cold Case. I needed two sets, one for the top and another for the bottom. Also Pontiac engines used a different fan shroud. The Pontiac and Olds shrouds physically look different, so I am not sure if the fan shroud could cause any issues. My gut feeling is the stock clutch will fit.
IMG_2226 by
Lawrence Alexander, on Flickr
