That's quite a power goal.
You do not need to lower the CR THAT much. 9.5-10:1 no problem.

It would be best in my opinion to run a further dished piston, however, I don't know the pin height of those pistons. So *maybe* a different rod would be required.

I don't think many people have tested the limits of an LSX 454 crate. Long strokes and boost generally isn't the best idea, lots of stress on components.

Personally I think if you keep your goal a little lower, say 1000hp, you'll have a little more reliable combination.



Regarding camshaft, you'll want to put new valve springs in if they're not already dual.. And consider doing a rocker arm upgrade w/shaft type rockers.. A camshaft wouldn't hurt while youre there, as you could gain some efficiency by putting a custom cam in for your goals.

-Dale