x2. It's not as "big" as you think in the 4" engine. What I would do is take the flow specs fort he heads, and consider the numbers. What are the flow figures for .200-.400? Can you post the test? You may find the 282S doesn't have enough lift to really work well with the heads because after lash and angles it only has about .490 lift. So the real area under the curve you will ever access is from the seat to about .380. The last small amount of lift has a much shorter duration...
