I have a 360 Magnum in my '71 Demon. Stock bottom end with a 226/238 @ .050" with .520" lift. Eddy Air-gap intake, 727 with ~3500 converter and 3.91s. My best is 12.76 @ 104 mph. I am currently running an Eddy 650 right out of the box. I never even touched the idle screws. With that said, I am considering going to a 750.
