STOCK EFI VS CARB, FULL DYNO RESULTS, PLUS CAM & CHEAP NOS. CHECK OUT THIS VIDEO WHERE I RAN A JUNKYARD GEN-6 454 FRESH FROM THE YARD. WHAT MAKES MORE POWER, THE FACTORY EFI INDUCTION OR A DUAL-PLANE AND CARBURETOR? HOW MUCH POWER IS NITROUS WORTH? HOW ABOUT A CAM/SPRING UPGRADE? ITS ALL HERE.