It is mag heads with mag pedestal rockers/hollow pushrods (so full time oiling). I put a gauge on it to check the psi (80 so plenty there). I pulled a pair of rockers & no oil out the (2) pushrods. pulled the pushrods & no oil out the lifter tops. dropped in another spare identical rocker & lo & behold oil was gushing out of the lifter top so the lifters must be plugged up but they are new... so I undid one & it has a wafer thin round disc right under the lifter cup & the lifter cup will sit flat WO the disc in there so evidently these lifters even with the oiling hole in the lifter cup that the disc is placed there only to keep oil psi from bleeding off unneccessarily on a non pushrod oiling app so I think when I toss the discs all will be good. Thanks guys & Doc I had forgotten about the pilot hole potential but it is in my head now, thank you.