SB is cheaper and ez-er as they have stock roller blocks and valve gear VS the BB retro fit is the first thing I learned.
pro for roller is no worry on the oil/zink,break-in for the cam,you can move the lifters around on the cam unlike a flat tappet.
I just pulled the SB roller cam from one engine and stuffed it right in another with defferent lifters this time with no break in worrys
![](/ubbthreads/images/graemlins/boogie.gif)
cons for BB are bronze cam gear/high rate of wear,machine work to clearance roller lifters,adjustable rockers/PRs,higher spring pressures and maybe more machine work,more $ to reto fit,and lot of measureing and math
![](/ubbthreads/images/graemlins/laugh2.gif)
pro for BB is high performance,no break in worrys with oil, and mild to wild on cam selection
![](/ubbthreads/images/graemlins/drive.gif)
I am working that way for my BB,been roller cam in the SB since 07, never going back to flat myself
![](/ubbthreads/images/graemlins/Twocents.gif)
and member Brian/IMM has made some lifters to adress some of the opil problems with high lifts,stronger lifter bodys,oiling to the rollers..ect
lots of home work to do yet for a BB
![](/ubbthreads/images/graemlins/thumbs.gif)