Need some help - loosing oil pressure at high rpm's

[madmaxx]

I agree with everything you say, the ding dongs who assembled it viloated every parameter!!!!!!!! It is equiped with a high volume oil pump and I plan on going 12an lines....... The pressure drop is nauseating!!!!!!!

Originally Posted by Jerry Clayton

At the end of the day----with the large main bearings of a 351w, especially on an aftermarket stroked crank, there is no way that you are going to feed the oil from a stock type oil pump thru all that plumbing and maintain pressure----------

Your system has violated just about every parameter of the oem type pump system that you are using even without going into all the pitfals of inadequate sizes and poor choice of hose ends(90*), plus attempting to do the filtering with a filter designed for a 1958 engine----

You are also overlooking many laws of physics pertaining to flow/pressure dynamics that are somewhat ignored in the motorsports hobby but never the less do still apply---besides the venture effect that I have mentioned several times, you are ignoring that you not only have a conglomeration of plumbing to the filter/cooler but that the after effects of the cooler (lowered temp) will effect oil viscosity and flow rates will decrease from that point on in the system--------

Ford made a right angle adapter for filters back in the 60s that would solve your space for a bigger filter (check cobra jet with oil cooler)--------

Those 3 inch mains are going to be impossible to feed with a stock type pump, and its going to be the rods that fail first from lack of oil----------


Bearing Clearance Info - Tech Article - Chevy High Performance Magazine