97LT1

iTrader: (3)

I have a under drive pulley (the piggyback type), along with a overdrive alternator pulley.

I am not sure of the brand of pulleys these are, but need to know what belt size everybody is running. I have a goodyear gatorback on there, but it seems that it is slightly too big. I am getting momentary noise when the a/c clutch engages.

ZONES89RS

iTrader: (25)

Measure it with a strap type measuring tape, use the MMs to tell the size then subtract 5-10 for the pully tensioner to work, good luck.

revtime

iTrader: (1)

Put some anti seize on the hub face or you will never get it off.

I recently did an alternator relocation and needed to get rid of my underdrive pulley. To make a long story short I had to cut that mother in half to get it off the hub.

camar0corey

iTrader: (22)

I didn't run the overdrive for the alternator or I'd get you a P/N. Good luck, I remember when I yanked my AIR pump off my 83 Z28, I did it by a parts store and I kept running back in looking for the right sized belt.