Fan, Radiator, Shroud
- Thread starter 3739ford
- Start date
JayChicago
Well-known member
I agree, could be more away from the radiator. That's the beauty of using a shroud, fan does not need to be close to the radiator to do its job of pulling air through the radiator. I think what that diagram is telling you is: use spacers as necessary to have the fan half in / half out of the rear edge of the shroud. I believe that is the optimum fan location for evacuating air out of a shroud.
On the other hand, you don't want more than 1 inch around the perimeter of the fan, between the fan blade tips and the shroud. You have to buy fan and shroud sized to work together.
On the other hand, you don't want more than 1 inch around the perimeter of the fan, between the fan blade tips and the shroud. You have to buy fan and shroud sized to work together.
Last edited:
ford38v8
Well-known member
To quote Jay, that's the beauty of using a shroud. The fan can be positioned high or low, it will work the same, as the shroud/fan creates a vacuum, pulling air through the entire radiator, not just where the fan is located.
Attached you will see pictures of my 39 pickup shroud. At a fast idle and the outside temperature over 100 this engine ran for over 5 hours at an early ford V/8 meet in Va.
a number of years ago. Temp never got to 180 and came down 3 or 4 degrees when
I raced the engine a little. This is some larger Ford truck shroud installed upside down
with thin strips of 16 gauge steel on each side for mounting. I think it has 180 old
Robertshaw 360-180 stats that have larger flow openings that don't restrict the flow.
The fan is an industrial fan I found in Schramm compessor's attic. You should also
have a 3 lb pressure cap, clean radiator and the fan belt properly adjusted. G.M.
