Per your question, we're working on a 1950 GMC 3/4 ton truck. Again, I defer to the experts but it seems the Chevrolet 235 is marginally shorter than a GMC engine. Not much, but enough to warrant the fabrication of engine mounts that will eventually support the rear of the engine. In my opinion it would be a lot easier to keep the rear mounts where they are and move the front mount towards the cab. Either an extension between the fan and the water pump to move the fan back towards the radiator or a fan shroud would also be best.
'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.
| 
