It might also be that the combination of my adapter and the Torker vs. Strip Dominator gives some advantage to the Torker. I have no comparison data on the two manifolds when used on a 351C, so I can't comment on that. But in any case, I have to say that I was pleasantly surprised that the Torker would support 700+ HP on my dyno mule; and after what I'd read, before the actual testing I figured the Strip Dominator would "Dominate" LOL.