Yea its a piece together lol. The smooth pulley is what I pulled off the old water pump. I found the part number fr the serpentine pulley to fit the new pump its an a/c delco #10085760 and here is a link to one. The old pulleys bolt pattern is to large for the new pump...
Well I pulled the cover off the new pump just to see the direction of the impeller and its the same as the serpentine pump. So I guess my only question is now is what pulley do I need to fit it?
I have an 83 c10 with a 96-00 350 vortec engine (10243880) has the 83 v belt drive on it. I bought a serpentine setup from a buddy off what he said was a 94 5.7 to install on this engine. I got all the brackets, alternator, old water pump and he gave me a new water pump with it and a/c delete...