With our limited experience,the standard non hi-volume pump will not keep up with the demands of a hemi above 6500rpm.We have seen increased bearing wear as well as topend wear.If the pump starves any area and oil passages, cavitation can occurr,air lubes nothing.As we have mentioned time and time again a hemi on a adverage 10 second pass will circulate 10 qurts of oil aprox. 3xs.This is why the need for larger sumps and more elaborate oil systems are critical.Volume is as important or more so as pressure.We have seen the big SS race hemis with hardly any oil pressure at idle and aprox.65# down track survive because of the volume of oil in the sump,accumulaters and a big pump to deliver that volume.That a hemi retains more oil in the top makes a dual line system and large sump critical over 7000rpm. My opinion only.



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