Actually the total lift and duration appear to be the same between the two cams. But the profile is a little broader on the S-C cam. Using the same prop, there doesn't appear any definitely measurable increase in power. It probably would open up a little better than the stock cam using a 10-6 prop rather than a 12-6? But I'm getting along just fine the way the engine runs with a APC 12-6. Right now the engine is on a Slow Poke so it is pointless right now.

I discovered that there wasn't any difference in the valve springs after you get bigger than the 26/30 engine. They all have the same free height and OD.