Looking for more pep off the line

Alecb said
I'm going to go through the whole engine just to make sure everything else is ok. I am very hands on with my build, I've done probably 95% of the work by myself. Unfortunately, I don't really have access to an expert outside of the internet or the books/magazines/videos I see. The internet and published media have a plethora of knowledge, but it's a great asset having an expert with you to check your work.

I'm not sure yet what caused the valve to stick, as soon as I have a chance I'm going to tear into it. The engine ran just fine for the ~600 miles I had driven it before it decided to stop running. Oil pressure and water temp were excellent at all times. Why the 106/107 LSA? The grind I was looking at has 110 LSA. I am going to call Comp Cams to get their recommendation for my application.

Look into David Vizard's 128 formula for determining LSA. SBF use 127. These apply to parrallel valve engines.
128 - (1 cylinder displacement ÷ (intake valve diameter × .91)).
110° LSA was the norm chosen for a wide range of displacements and valve sizes for an engine series. Look in the cam catalogues and you have cams listed for SBC from 262 cubes to 400 cubes with an RPM range and idle quality. A cam that will give a 262 a fair idle will be quite smooth in a 400. Going the other way, a cam in a 400 giving a fair idle will likely idle a bit rough in the 262.
The valve size relates to air flow prior to .25D of the intake valve. At .25 × the intake valve head diameter lift, the valve curtain area is equal to the valve head diameter. In the .350" to .400" lift and less the valve and seat are the limiting factor to flow. At higher lifts the port becomes the limiting factor. So David uses the displacement of one cylinder and valve size to determine the best LSA for overall performance. Idle quality is then a function of duration which affects overlap. According to David, get the LSA correct and you may use a shorter duration cam or single pattern and get the same performance. Other contributing factors can be compression ratio and whether the cam and valve train provides quick off the seat or not. Best to search the video to get the rest or whole story from DV.