JC,not sure what brand.My failure was with a set of Iskys with lifter bore restricted.I was lucky and caught it by accident.I think for a show car/bracket car you can get away with the solid rollers.With 700 lift and a LOT of street miles I think you REALLY have to watch them.I sometimes drive my cars a 100 miles each way in a day.For a race car they are what you need but for a "true" street car I just dont go there anymore.Again,JMO.Im building another 301 stroker engine right now and have been going crazy of what lifters im going to run.301s have a strange lifter bore,the reason Joe Sherman used solid rollers in my last build.The oil hole is .500 lower than a 400 block,the boss goes .300 lower toward the cam and also the oil hole is like a .500 wide going around the bore..Trying to figure out what hyd roller lifter can really be used in one with 600 plus lift.Tom
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