7. LMS racing is all about overcoming the limitation of the small two-barrel carburetor to pack as much air and fuel into the combustion chambers as possible. This makes the camshaft specs critical—especially since all the top engines will be within a few fractions of a horsepower within each other. As you might expect, Troutman didn’t want to share the full spec sheet for the camshaft. We can tell you however that he worked with Comp Cams to choose the lobe package and uses a cast-iron core.