OK, maybe this is to broad a subject for the kind of generalizations necessary for conversation, but I'd like to try...
The basic concept I'm curious about is; does widening the LSA move the power band upward in the RPM? Some background on why the questions:
When we ran our 4" stroke combination (BBC), we seemed to make the best power (compromise between torque/HP/RPM) for a flat with cams using a 110 degree LSA (usually installed 3-4 degrees advanced). When we tried wider LSA's it seemed we gave up to much in the lower RPM for the benefit of a bit more HP up top.
In our last build we used a 110 LSA (installed straight up) on our 4.5" stroke deal. After dyno'ing it, I'm thinking we may have given up some HP since the TQ was already over 800 by 3500 RPM but peaked by 5000 RPM. I'm leaning towards trying a 112 LSA to get it to move the Tq peak up a bit higher in the RPM. So, am I even close to correct in my thinking???
OBTW, cams I've tried were generally around 285*@.050", around .78" valve lift using conventional heads (Dart 355's /Brodix -2's), nothing trick.