It's better because I can make my own timing curve. The original timing curve rises too slowly for a hot cam. Basically what I'm gonna do is add more ignition advance to lower revs which gives more power low down and better fuel economy.

Similar effect could be achieved with using a dizzy with centrifugal advancing mechanism and changing the springs to softer ones. But this is laptop adjustable so easier to achieve the end result I'm looking for.


I myself never have changed the valve stem seals with the head in place, so haven't really thought about it, but on a quick thought I think that should be possible. Just remove the followers, and before removing the valve keepers make sure the valves don't drop inside the cylinders. I believe some people have used rope, stuffing the combustion chamber with it so the valves can't drop down. Also I dunno how easy or hard it's use the valve spring compressor, while the head is in place.