Once you get the Chevy engine in place you should consider a fan shroud. The Chevy fan will be 2-3 inches further away from the radiator than the GMC fan was. A second option would be a "spacer" for the fan and longer bolts.

Last edited by Bill Hanlon; 07/30/2024 8:19 PM.

'57 GMC 102, Original 347 V8, HydraMatic, 3.08 rear gear, added A/C, disk front brakes, HEI, AFB carb, '98 Honda Black Currant paint. T-boned and totaled 10/12
'52 GMC 152 Stake Bed, Original 228, SM420, added A/C, HEI, disk front brakes, '67 Chev 3.55 rear gear. Gets used as a real truck.