Hey guys need to know what the pump shaft DIA is for the pulley? Im getting a reman fenco power steering pump and I need to get a pulley for it but Im going aftermarket to match my other pullies. Waiting for the pump to come in but i need to purchase the pulley .

IS the stock pump a 5/8" keyed shaft? or is it a 3/4" press fit shaft?

I need to know ASAP so i can purchase the pulley so i can make brackets to mount the pump.

 

Mine was a Singnaw pump with a press fit shaft. I believe all serpentines are press fit, not keyed.

 

ok. well my 87 stock setup wasnt a serpentine setup which is why im asking

 

The prior pumps were not keyed either.
I'd like to point out the holes are in different places from non-serp to serp though. Just in case.

 

i got the pump and its def NOT a keyed shaft. Looks to be a 3/4" or 7/8" shaft DIA too. I thought the pumps only came with 5/8" keyed shaft and 3/4" press fit shafts? the ruler i was using had a really loose end so it could have been off but it was def a 3/4" or a 7/8" shaft.

couple of questions tho if you guys dont mind. How do i plug the threaded holes in the back of the pump? I cant remember if the stock pump had bolts in these threaded holes and i believe it did. In that case... does anyone know the thread size? same goes for the threaded holes in the front of the pump? Also The shaft seems to be threaded... is there a bolt that goes down and presses on the pulley? or is that for the install tool?