Adding 22 cubes,,, power increase? 528 to 550

There may be some top end hp available by advancing the cam, and that’s what makes things happen at this level. If the heads still have water in them the heads will become the bottleneck before the camshaft will. It would probably take a set of the solid cast -1 heads wallowed out before the cam becomes the limit here. It’s awfully close to being a blown alcohol grind. I expect there will be a decent change in the e.t. numbers coming out of the recent changes, your displacement is near the limit of what a good 440-1 is able to keep up with. I’m curious as to what aftermarket block and driveline you are containing all this power with, and what the chassis is certified to run at. Definitely got some bragging rights here.