SBM Roller Lifter Choice

Id say solid roller lifter why mickey mouse around with a HR profile
I already said who I'd go to for cam advise and a cam
most likely a shelf cam is not going to do what you want
you need to get your calculator out and figure out how to figure out spring rates
know what your installed height or installed height choices are
then see what the cam vendor recommends
and thensee if your springs can be made to work
get all your wish list together and go around again
also what furry said