[Technick]

It is always a good idea to run a chrome moly oil pump drive shaft, even in stock applications, the stock peice is just good enough for stock only. Like I said before, if your engine is set up with the right clearances there is NO need for a H.V. pump. We run a stock pump on a 8,000 rpm stroked smallblock making over 750 H.P. Have over $10,000. in this engine and would not ever run a H.V. pump in it. As long as you have 10psi for every 1,000 rpm you are spinning it you will have no problems, provided pan capacity ect is good enough. So at 8,000rpm you should have at least 80 psi of pressure, 30 psi at an idle is just fine. Now if the engine is just a mail order re-man, or is a back yard slap it together to get it running engine , then I would most certianly would use a H.V. pump because I would not be certian of how everything is set up, kind of a cheap band aid at that point.