I have an Impala SS (1996) that has two pulleys on the crankshaft. The one that is aligned with the pulleys on the A/C compressor, alternator, etc., is about 2 inches smaller in diameter than the larger one. The drive belt is on the smaller pulley and the larger pulley is not to be used.
Here are my questions. Does using a smaller pulley on the crankshaft spin the other pulleys (A/C compressor, etc.) faster or slower than if the larger crankshaft pulley had the belt on it? Would using the smaller or larger pulley be better on performance or component longevity?
Would using the smaller or larger pulley be better on performance
No. You car has been engineered to balance everything.