what all needs to be done to put in a High Volume pump? is it difficult with i need to pull the motor or can i do it under the car just by pulling the oil pan? i know i need the pump and new pump shaft with the steel guide but will i need a pickup or can i used the one from the old pump and what about the oil pan? does it have to be deeper? and will i see much of a change in oil pressure with a HV pump?

 

A logical question would be why do you feel you need a high volume oil pump? There are some huge HP strokers and stock displacement engines, running the stock pump with no more than a blueprint on the pump, "white" high pressure spring and a tack-welded pickup. In fact some people with stock pans have cited pump starvation problems with the HV pumps.

 

im just having pressure problems and have been putting 10w 40 synthetic in the car and i think the pump is getting worn out its got 86k on it should i just get a melling standard volume pump as use the white spring which is 40-65 psi i think? Anyone know where i can get the spring?

 

The white spring is a GM part. P/n can be found on the part numbers page in my sig. Install a new pickup, too. That should be automatic, IMO.