fan clearance

[aussie merc]

radiator is taller and wider hence the increase in the frontal area also buy the time that the airflow finds its way back to the forth row its already absorbed about as much heat as it can so the forth row does very little also the tubes are 3/4 against the standard 1/2 so the actual capable coolant flow is higher add to that 14 fin per inch against 8 fin per inch so technically and on paper you can cool a big block with it just trying to optimize what i have as we suffer with a normal heat range of neg5C to 40+C winter/summer