First, we have to re-visit what hotrodder means. To me, it means that the builder is able to modify any and all components of the vehicle in order to achieve a certain goal in building the vehicle. Your goal is to transplant a small block Chevy into an "Effie" pickup truck and have it work like factory. This swap has been done successfully thousands of times. Not only that, but 460 Fords and 454 Chevys have been swapped into Effie trucks successfully in the past, so please do not make the statements that you did without considering moving something. Like your "no room for a clutch fan" statement. Baloney, plenty of room for a clutch fan if you use the proper components and engineer the swap properly. I wish you lived next door to me, we'd have this mess worked out over the weekend.
YES, IT IS SHROUDED. THE FAN SITS 1" AWAY FROM THE RADIATOR.
This tells me that you have not considered moving the radiator forward or changing from long water pump to a short water pump to make room for a full, well-fitting shroud, 7-blade, 18" diameter steel fan and thermostatically-controlled fan clutch. Here's a link to understanding the long/short water pump situation.....
Chevy Small Block - Short vs Long Water Pump
A 14" FAN IS AS BIG AS I CAN PUT ON DUE TO RADIATOR HEIGHT.
Then you either have the wrong radiator in the truck or the stock radiator is mis-mounted from its stock location or you don't understand that the shroud can be bigger than the radiator in order to house an 18" fan.
The last engine swap I did before retiring was a 302 Ford and C4 into a Mitsubishi pickup truck. This was the small (D50) type truck. It was necessary to move the radiator forward and remount 2" ahead of its normal position and re-mounting the grille assembly 1" ahead. It looked stock and nobody ever said anything about it looking funky or anything. And it worked. The motor cooled well with the stock radiator, shroud and fan assembly from the Granada donor.
P.S. I don't use electric fans on anything I build. I have respect for those who can use them successfully, but for me, it's mechanical fan or nothing because I have never, ever had a problem with cooling using them. There are those, such as Jack, who understand these electrical systems, but I am not one of them. Of course, now that I'm retired, both my daily drivers have electrical cooling on them, but they were designed to work under all conditions by a team of electrical engineers at the factory. All I have to do is not fool with the systems and they work great. But if I ever do another swap, rest assured that it will be cooled with a full shroud, mechanical fan and fan clutch, operated through vee belts.
.