Great thread guys, I was wondering the same thing.

I'm gathering parts for my 426 as we speak.

Here is what I have and yall tell me what kind of power it will make, or maybe what other parts I need.

I have a 426 MP block stock bore with a stock stroke crank, the MP aluminum heads, an older Weiand 2 - 4 tunnel ram intake that I will have to Ron's flying toilets alcohol injection, I have some Canadian roller rockers, 13.5 - 1 Venolia pistons, and some Keith Black aluminum rods.

What roller cam do I need to make the most power? I also have to buy lifters, pushrods, and valve springs, and maybe valves.

What header tube size do I need, and on these I plan to build a 540" short block later to put in the car under my current top end, so what header size will I need for it and I will build them now.

It's going in our racecar, no street driving.

With the right cam, what kind of power are we looking at?

Thanks