I'm not sure what I'm going to do with this engine. I might just put my old cam back in it...
There's my suggestion... but you have more time & $ than I do at this point.
One thing I could do that might make sense would be to get another 264/268 cam ground but on a different LSA. Maybe tighten it up to 106 and see what happens. That way most of the variables would be controlled. Not sure it would worth the time and effort to do that test, but it would be a logical thing to do.
I suppose it makes sense to ask where you're looking to see improvements over the 264/268 on 108...
All I care about is 4000 to 7000 rpm and I'll give up some lower end to raise the peak if I have to. Although that seems to be a tricky deal. Common theory is that a bigger cam will trade low end for top end but it doesn't seem to work that way in an engine like this. Too big of a cam just kills the power everywhere.
