With the advent of the LS engine platform the battle of EFI vs Carburetors took on an entirely different look. With the power potential of the LS engine and specifically the intake manifolds they used, the shootout was in full swing. Luckily for you Richard Holdener did ALL the EFI vs Carb testing, going so far as to build his own adjustable intake manifolds in order to see what could be done with each. In this video he’s focusing on the LS1, the original 5.7L LS engine, and what the power potential is with a cam swap a carburetor, and some different throttle bodies. Check it all out below.

Video Description: LS1 PERFORMANCE-WHAT MAKES MORE POWER, CARB OR EFI? HOW MUCH IS A CAM SWAP WORTH ON A 5.7L LS1? HOW MUCH POWER DOES A LARGER THROTTLE BODY ADD? CAN A CARBURETOR MAKE MORE POWER THAN MODERN FUEL INJECTION? HOW DOES A DUAL-PLANE INTAKE COMPARE TO A SINGLE-PLANE INTAKE ON THE 5.7L LS1? CAN I RUN A CARBURETOR OR EFI ON THE SAME INTAKE? DOES THE 90-DEGREE ELBOW HELP POWER? CHECK OUT THIS TEST ON A 5.7L LS1, WHERE I TESTED THREE DIFFERENT CAMS, TWO THROTTLE BODIES AND FOUR DIFFERENT INDUCTION SYSTEMS (TWO CARB AND TWO EFI). LOOKING FOR LS1 ANSWERS? HERE THEY ARE JUST IN TIME FOR THE NEW YEAR!