The Stovebolt Site Forums The Shop Area Engine Shop Overheating problem - have a shroud example?

You'll probably have to fabricate a shroud to fit your specific application.
Some things to consider:
(1) use the pulley approx. 6"-7" diameter for the 55-62 (235) pump. The 54 and earlier pulley is too small and turns too fast causing cavitation.
(2) use a 55-62 (235) fan blade. There is more pitch to the blades and pulls more air thru the radiator.
(3) use a 180 degree thermostat.