Ferrea LF1004 63g Lifters - on sale

While in very hi RPM applications, lighter lifters and Rev Kits with a second set of springs seated in a plate acting directly on the tappets provides some performance and
reliability gains, You ain't never gonna see it/feel it/know it in a mortal slanty period. Don't start chasing magical, mystical "balance of the universe" ghosts, the improvement
IF any would be nearly undetectable. 95%+ of all valvetrain performance improvement comes from valve-side reduction in mass, including the long arm of the rockers, don't
take My word for it either. Go check out what folks like say...Smokey Yunick had to say about it after spending His life obsessively studying,testing, & racing such things.