Who makes adjustable timing gears though?
Also adjustable timing gears only prolong or hasten the curve of said camshafts. They don't really alter their primary power curve shape.
For certain applications that could be benefitial. (i.e. stock or oval port cams)
For instance retarding the oval port exhaust cams on a boosted engine.
For a NA application to better using the SVT cams you really need to change to a completely different set of camshaft profiles. Like the CAT Stage 3 cams. (or Stage 3/2 combo)
