I have just finished buildintg a SB chevy 350 with slightly less pollution control accessories and slightly more hp and torque than stock. The motor is going on a 1979 Chevy Silverado truck everyday driver. I took the motor over to a dyno guy yesterday and she was producing (corrected) 296 hp @ 5,000 rpms. I casually informed the dyno guy that I was going to install a tranny cooler and an oil cooler forward of the radiator and a dual electric fan set-up puller aft of the radiator (bye-bye to the belt driven fan). He was silent on the tranny cooler and electric fan set-up but flatly stated the oil cooler was useless for everyday driving conditions (the truck won't haul much other than me and the dog but will be operated in the deep South where the temps and humidity can get fierce). He said that racing or towing applications were different, but he went as far as saying that the oil cooler would cool the oil too much and would cause the engine to run too cool. Comments out there??? p.s.: I've already bought the oil relocation kit and oil cooler, but have installed neither. I plan on breaking-in the engine with Castrol 5W-30 for 3,000 miles then switching to M1.