Junkyard 5.3s make real power regardless of how many miles are on them. I mean a 200,000 mile 5.3 will make 350 horsepower on the engine dyno. But what happens with simple bolt ons? And how about when you go so far as to put a set of heads on it? You can make nearly 500 without a set of heads, but you’ll see all the details in the video from Richard Holdener below. We’re talking cam, intake, etc, so that you can make an all motor 500 horsepower combo. Of course a toot of some nitrous makes this thing a real beast after these mods, but let’s see just what kind of power you can make with no power adders and a junkyard 5.3.
CAN I MAKE MORE THAN 500 HP WITH AN ALL-MOTOR 5.3L? WILL HEADS, CAM AND INTAKE (HCI) MAKE 500 HP? IS AN L33 A GOOD MOTOR? HOW MUCH POWER CAN A JUNKYARD 5.3L MAKE? HOW WELL DO TFS 220 HEADS WORK? WHAT IS THE BEST CAM TO MAKE 500 HP? WHAT INTAKE SHOULD I RUN? SHOULD I RUN FLAT-TOP PISTONS? CAN I MILL MY HEADS? CHECK OUT THIS VIDEO WHERE I TOOK A HIGH-MILEAGE, JUNKYARD L33 (ALUMINUM) 5.3L AND TURNED IT INTO AN ALL-MOTOR TERROR! AFTER MAKING 480 HP WITH A BTR CAM AND FAST INTAKE, I DECIDED IT WAS TIME TO TOP THE 500-HP MARK! I THEN ADDED THE NECESSARY HEAD FLOW AND A MODIFIED INTAKE TO PUSH THE POWER BEYOND THE 500-HP MARK.