cummins swap question

[79diesel]

Just finished putting a 91 non intercooled 6bt into a 79 GMC Sierra. Everything works good except the power steering pump isnt putting out enough for both power steering and hydroboost brakes. It loads up the engine it is working so hard. It barely has enough power for just steering. Could this just be a bad pump or should i look into a different pump setup?
thanks

 

[chris walker]

if its the trucks stock pump replace it also it is probably struggling with the steering becasue you put about an extra 600bls on the front end

 

[79diesel]

I got her figured thanks anyway...there was actually nothing wrong with it. It is only at idle when the truck isnt moving when it has a problem. Drives great.