I have a set of brand new set of Hyd. roller lifters here for a big block 385 series ford. They are supposed to be morels, and the better lifter that is improved and and capable of 6500ish with out floating or collapse. i have a suspicion they may not be boxed correctly they look an awful lot like the cheaper lifters out there. they have a full body, 700 wheel, a regular snapring and about .250 of travel. is there anyway to tell if i have the better lifter? i need these to hold against 440 open and turn 6500 rpm without collapsing or floating. can somebody help me out?
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