My car was originally an ac car. It has a 3 groove crank pulley.It had a single groove water pump pulley ,wich ran the power steering. And the altenator belts were ran off of the ac 2 groove pulley. I decided not to put the ac back on. I tried to do some research before posting my question, but could not find anything similar. The power steering is the very front groove on the crank wich runs the water pump as well. I figured if i got a 2 groove water pump pulley, i could use the second groove on the crank pulley for the altenator by running the belt over the water pump . Well, no luck the 2 groove pulley = the back groove is where the front of my crank groove is. I thought maybe the single groove altenator is differant from the 2 groove i have, Well my back groove on mine is where the single is altenator groove is located. Wich it should work wether i use a single or double altenator. IS there 2 differant water pumps for a small block? I need some insight on this one. On non ac setups i see people saying use a single groove water pump pulley. IS that even if it has power steering? It does not look to me that the altenator could be ran straight off the crank under the water pump with out rubbing, maybe it could , it was dark and i am tired. Hope someone can shed some light on this