Depending on what year of truck you have installed the 235 you probably will have to use a electric fan,I installed a 57 235 in a 37 and the pulley just cleared the radiator and if a fan would of cleared the radiator it would hit the crank pulley. The perfect motor to use is the late 53 or 1954 235 as it has the same waterpump as a 216,I had the chance to buy a 54 before I found the 57 and I wish I would of gotten it instead of the 57.

1937 Chevy 1/2-ton pickup