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After baselining our GMPP 290hp 350 in as-delivered trim with the 222/222 @ .050, .450/.460 lift cam, and low-rise Weiand Action Plus manifold, we tore it down for the new Vortec heads and Lunati Voodoo camshaft. It's critical to run a good assembly lube and add a zinc additive to the engine oil when breaking in a flat-tappet cam, so Westech's Steve Brule liberally coated each lobe with Lucas assembly lube and then added a quart of Lucas Engine Break-In Oil Additive to the crankcase.