You have to rebuild it....
no you dont. first thing you need to know is gmc has three different pulley widths. you need to know what the width of the generator or crank pully is first. 3/8",5/8", or 7/8". the part number is different between them.
7/8ths pulley: Airtex P/N AW36W or Master P/N #CP36W
5/8ths pulley:Airtex P/N AW36N or MAster P/N CP36N
3/8ths pulley:Airtex P/N AW530 or Master P/N #CP530
i have gotten mine at jim carters and at advanced auto. i still have a new one in the box. they are all new airtex pumps. they are not cheap either.
if your not far from hilton n.y. go over to the napa and ask for doug. he has a 57-59 gmc with 270 he put together. he can get you what you are looking for.
