We all know that long tube headers, and header size, can make an impact on horsepower, but recent testing from Richard Holdener shows that smaller 1 3/4 inch headers don’t suffer at high rpm on smaller and mid power level engine combos, and are actually better down low than larger 1 7/8 inch long tube headers. But what about 600 horsepower combos? Or supercharged stroker combos that make more than 750 horsepower? The video below is going to address both scenarios and let you see how these power levels respond to a change in the size of header primaries. As usual, you’ll see the testing, the data, and the conclusions right here.

Video Description:

DO LONG TUBE HEADER MAKES MORE POWER? WHICH HEADERS MAKE MORE POWER, 1 3/4 VS 1 7/8 INCH? DO I NEED BIGGER HEADERS ON MY SUPERCHARGED LS? DO HIGH-HORSEPOWER LS MOTORS NEED BIGGER HEADERS? DO I NEED BIGGER HEADERS? HOW MUCH POWER CAN I MAKE WITH 1 3/4-INCH HEADERS? WHEN DO I NEED TO STEP UP TO 1 7/8-INCH HEADERS? CHECK OUT THIS VIDEO WHERE I COMPARED 1 3/4-INCH VS 1 7/8-INCH LONG-TUBE HEADERS ON A NEAR 600-HP 383 STROKER AND THEN AGAIN ON A 750+ HP SUPERCHARGED 383 STROKER. DO YOU REALLY NEED BIGGER HEADERS ON A BIGGER MOTOR? DOES MORE POWER REQUIRE LARGER PRIMARY DIAMETER HEADERS? LOTS OF GOOD DATA!