fully ported they will support well over 500HP which you'll need to get low 11's. I did a 422 sb a few years ago using the Eddy mag heads, our cam, Indy intake, 950 carb and 10.5:1 and made 565HP with it. It also made 550's TQ.
you won’t need over 500 horse to run low 11’s with a 3000 pound car.
I went 11.26 with a 3350 pound car and wasn’t remotely close to 500 horse. More like maybe 450, maybe.
At 3000 pounds I would have dipped into the 10’s rather easily.
