7. The camshaft is a very aggressive mechanical roller, spec'd out by DNE and ground by LSM, that features the popular LS firing order swap, which alters the firing order of No. 2 and 3 cylinders and also No. 4 and 7 cylinders. According to Ebbert, who checked the camshaft after it arrived at the shop, the swap can make additional power with the right intake manifold and header combination. Dave had the camshaft custom-ground for this application and was remiss to mention the specifics. But, he did say lift at the valve measured more than 0.800 inch for both the intake and exhaust, and that the duration for the intake side was 270-plus and exhaust 280-plus degrees. The lobe separation is at 116 degrees.