headers vs manifolds on a 318 2bbl difference ????

It made more HP. Added 2 MPH in the 1/8. Also lowered the ET. But you didn't watch the video. Keep your 2 cents and I'll take the 2 MPH
LOL :thumbsup: :poke: :poke:
LOL!!! That's ~15-20hp depending on what the car weighs, it's a total mystery, how do those 2 tiny barrels flow enough air to fill all those pipes????:rofl: