[chewychevy67]

I should state my truck Is a 4 row hd rad as well. I would have to take approx 3/4inch off to make the fan centered in the shroud opening. Most of what I have read online indicates that it should be 50/50 . If the fan is all the way in the shroud it creates a pocket that the air just swirls in the shroud instead of pulling it thru. Mine only sticks out the back of it 1/4inch.