The 261 is in a 1950 1 ton truck. I have the water pump relocation kit installed. I have a 180F thermostat installed. Cools fine while driving and no over heating problems... The temp rises a bit in traffic or around town on hot days.. Already had the 3 fans and thought a 5 blade fan would help in those conditions.

Did trucks get different fans than car applications?


Old Truck addict
1950 chevy 1 ton napco
1956 gmc 1 ton dually napco
1954 chevy 3/4 ton napco
1957 gmc civil defense napco panel