I think Barnes still sells the pans and service parts for the pump....basically (like Marck said) it`s a two stage in the pan dry sump system, I had one didn`t much care for it, sold it off and went three stage Weaver...that got replaced by a four stage Stock Car Products pump (basically a Weaver copy) & all larger lines. The more oil you can scavenge from the motor the less parasitic drag you have on your rotating assy, freeing up some horsepower, I have seen guys with big $ pumps suck so much oil out of the motor they had to install squirters in the pan to squirt oil on the piston pins...now your talking some real money. Years ago we ran mostly -10 lines then -12 and now only one -10 from the valley to the scavenge side of the pump the rest are all -12 with the return to the tank a -16, I have seen some return lines as big as -20...imagine what those hose ends cost? There is (or was) a swing pickup for use with a trap door road race pan developed by Smokey Yunick (I think)....but if your doing any type of road racing and value your motor you will go dry sump.
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