I need the bullets expertise! I was running a hyd. flat tappet cam in my pontiaac 461 stroker last year with a Torker intake and this year I switched to a Victor intake and a solid roller. The cam has .688 lift and 255/263 duration @.50. The car runs the same E.T and the same mph. Do you think my carb is two small? I'm running a 950 HP. Last year I tried taller tires and the car went exactly the same and now this year the same thing. Any help or advice would be awesome.