FULL RESULTS & VIDEO! 2 TESTS! 350 VORTEC HEAD & CAM UPGRADE. UPGRADING THE LEGENDARY L82 WITH ALUM HEADS & CAM. Are the junkyard Vortec heads the best bang for the buck? Should you upgrade your non-Vortec SBC with junkyard heads? Should you just get a complete motor and mod that? WHAT DOES THE L82 MAKE AND HOW MUCH DO ALUM HEADS AND A DECENT CAM ADD?