HOW TO: 500-HP L83 MODS. CAN THE GEN 5, 5.3L L83 MAKE 500 HP? WHAT MODS ARE NECESSARY TO PUSH THE POWER LIMIT OF THE ALREADY IMPRESSIVE GEN 5, 5.3L L83 UP OVER 500 HP? CHECK OUT THE RESULTS OF THIS TEST WITH THE GANG FROM BRIAN TOOLEY RACING, WHERE THEY ADDED A SIMPLE CAM AND INTAKE UPGRADE TO COAX OVER 500 HP FROM THE 5.3L (BUT CHANGES WERE NECESSARY!). CHECK OUT HOW THEY DID IT!