“Roller lifters maintain better contact with cam lobes, allowing cam designers to create profiles with more midrange and top-end power than a flat-tappet cam with the same duration,” says two-time NHRA Pro Stock champ Jason Line.
In this short tech tip video from Summit Racing and Powerblock TV, Line will give you a quick refresher course on flat vs. roller tappets, why roller tappets provide a performance advantage, and why they give camshaft profile designers more power-band flexibility.
Watch the video now:
I want to replace to my 2009 hummer 2 performed camshaft kit. Please advise, which camshaft, camshaft bearings, valve springs, valve seal, lifters, pushrod suitable for L92, 6.2. TNX.