[Cliff R]

"11:1 static CR should be no problem with aluminum heads and a cam that big on pump gas. Dynamic CR is the important number."

+2

Cam is smallish for the CID, static compression ratio and head flow. I've done a few 505 engine builds and use bigger cams than you are looking at, plus they were topped with High Port heads with more cross section and better flow numbers. I would re-think the cam choice and keep in mind that this will be a relatively long-stroke build with great piston speed, and it doesn't have the intake runner cross section like the better Big Block Chevy heads do, so poor to compare one to the other.

Big CID and higher compression work to your advantage with this sort of thing. A big 530 CID build with 11 to 1 will gobble up a 250/260 @ .050" cam and act like a 350 build with an RV cam in it.

The first 505 I did on an aftermarket block with High Port heads didn't have enough cam in it to make the power numbers we were looking for or take advantage of the head flow. Nearly as I can remember it was around 260/270 @ .050, solid roller on a 110LSA. It was replace with a larger cam sporting over 270 @ .050" and over .700" lift and we were nicely rewarded with another 75 HP or so and met the goals for the project.

On an engine that big the T-II will be a choke point in the system. It's a great intake for making HP but smallish to feed 530CID with 340cfm head flow.....IMHO......