We like to use the Melling HV or their blue printed
oil pump that has an adjustable relief spring plug. We will normally have no problem with the standard HV pump but because of tolerances in the pumps and the lifter holes on some of the stock blocks as well as bearing clearances choosen we will want to boost
oil pressure a little when we dyno test. If you are going to run a solid roller I would recommend restricting the
oil to the top end of the engine or you may pump the oil pan dry with most of the oil going to the top of the engine. We use restrictors that we have made that screw in where the lifter galley plugs normally go. These run about 25.00 and work great. you will also want to make sure the solid lifter you choose has the groove in the lifter line up with the lifter galley or you may burn some pushrods. Leaving the restrictors out does not solve this problem as some would have you believe. It is a lifter galley and groove in the lifter alignment problem. We saw this problem many years ago and it also depends on the block you use. Some of the late mmodel and the race blocks have the lifter galley moved up in the block. Good luck. Keith Craft