This is part 7 in a multi-part series covering the custom 422 cubic-inch stroker engine build performed by master engine builder Bill Trovato at BTR Performance for our turbocharged 1971 Olds project called the "S71". This time, Trovato installs the roller lifters, COMP Cams pushrods and rocker arms, and shows us how to adjust them. Although this video series features and Olds engine, the valuable, race-proven techniques shown by Trovato apply to any performance engine build.