Small Block Fan Belts

bobscuda67 said
The inside groove drives the water pump and the alternator. The middle groove drives the power steering pump. The outside groove drives the AC compressor. My car has a three groove crank pulley too. It has the single belt compressor setup. Hope that helps you out.

what year car is that on? 70 and up with air had two belt going to the crank, a/c and the alt.. and one belt going to the ps, water pump and the crank.