Difference between solid cam and hyd. cam?

I must disagree with the "constant valve lash adjustments". I know racers who only run the valves twice a season. I run mine more often than that but it isn't 'constant'. Besides,.. done correctly, it only takes about 20 min. to do it anyway, Two or three times a summer for a street strip vehicle would be about right. It is correct that the solid (mechanical) will make more power everything being equal. Comp Cam did a test a few years ago with a small Chevy, dyno test mule, but the results would apply to mopars also. They ground a hyd., solid and solid roller cam to the same specs. It was a moderate cam .550 lift range I believe. The solid flat tappet made 3% more power than the hyd. and the solid roller made 5% more. No doubt do to the reduced friction over the solid flat cam. If you don't mind adjusting valves, there is power to be gained by running a solid but with increased maintenance, a slight increase IMO. This is just FYI. The choice is yours.

Terry