ClassicCar

The best way is to change to a nice pump. One that has been blueprinted. In other words, it has been gone through and all of the parts and tolerances checked to make sure they are what they are supposed to be. Don't get a high volume pump, that will just increase the amount of oil it is pushing and won't necessarily increase pressure. They quick way is to remove your current pump and replace the spring inside with a heavier spring. The quick and dirty way is to stretch the spring you have. Remember, you only need 10psi for every one thousand RPM in a smallblock, so you may not need to do anything. I worry more about pressures that don't cahnge much with RPM than I do about low pressures. My car idles at about 20psi in hot weather and never gets above 50 psi in hot weather, but it doesn't see 5,000RPM either.