Vacumm verses compression

Is vacuum having to be pumped by the pistons as much drag as having to build compression? Once cranked and running is your pistons being pulled ahead or working hard just to keep up the compression! As a camshaft jumps ahead in the fact that there are more valves closing than opening in the cycle, increased spring tension robs little to no horses! My strange pressure adjustments do strange things to timing sets if not so designed for forward chatter! The lower compression and boost of vacuum along with the freezing of air and fuels is what causes the rush to the heated cylinders to increase velocity greatly! We have pulled the tops and bottoms from pistons and rods in past years! Valves have a harder time opening with vacuum applied along with spring tension that had to be lessoned to ease the stock rockers! Roller tips tend to be trendy to a more precise style of geometry than will work for me! High vacuum and low compression seems to produce high effects on flow to multiply compression after ignition with more there to burn and expand! A high idle speed is the only safety net in this process! It requires some extra relief from being closed off when lifting and closing off the suction side of the pump while at it's peak! I have no written formula for getting this to happen but you have to stretch things out and then speed them up to make it happen! I never had a slow cam and never hardly ever used the same design twice! Making your on numbers out of thin air is my drive around the track with any cam! No degree or wheel used in this process of finding each happy spot once finding the starting point! I do believe vacuum to be the stronger of the two! Creating a vacuum spot after the burn and before the exhaust valve opens only adds to my stroke of power using vacuum to pull the piston upward! Just a little more vacuum stroke seems to add horses with out cubic inches or downsizing the ole pumpers, but my verdict on compression is still out!