Ive found a 2 piece set for the 5.2s (crank and alternator), wouldnt they cause the alt to spin faster with the smaller pulleys?
Link? It's probably an underdrive crank pulley, and an OVERDRIVE alternator pulley, to keep the alternator spinning at the same rate as stock. Power steering pump and AC compressor will slow a little also, but that doesn't really matter at all, I've never heard of anyone having issues with these. Only heard of issues with the alternator, and it's usually when they don't get the matching pulley and have massive drain on the electrical system (subs, tv,s etc...).