Are Summit Racing flat tappet hydraulic cams worth trying or are they just another china junk? What about their lifters? Are they any good, the pic in Summit`s pages shows that they are with hardened faces but i doubt it.
What about these GM lifters:
GM Performance 12371044 - GM Performance Hydraulic Flat Tappet Lifters - Overview - SummitRacing.com
and what is the difference to this lifter? It`s 23$ a piece so 16 times =368$
GM Performance 5232720 - GM Performance Hydraulic Flat Tappet Lifters - Overview - SummitRacing.com