K20 Power steering pump
 

Can anybody tell me what pump came stock in my 80 GMC K20?
I think it's a Saginaw P series, are all P series the same, except for the bigger reservoir?

I'm looking for a stock replacement with res in chrome.

Re: K20 Power steering pump
 

Whats the difference between the vac booster pump and the hydro boost pump?

Re: K20 Power steering pump
 

An extra hole for hydro boost line

Re: K20 Power steering pump
 

So the actual pump is the same.

Re: K20 Power steering pump
 

I believe the pressure is different on a hydro pump.The valve can be changed from one pump to another.

Re: K20 Power steering pump
 

I am running hydro boost with a vac pump just put a tee in the line to run the extra one I will take pictures if you would like

Re: K20 Power steering pump
 

Ghetto, Ive seen that done. But your using your stock non-hydroboost pump right? And it works fine.

Re: K20 Power steering pump
 

correct and the truck stops on a dime with four wheel Discs