Timing

All I know is that you can change the timing from stock to 14 I believe to get more power. Search this forum, I know it has been brought up a few times.

Yes you can change the relationship of the cam to crank

It is usualy done with a crank gear which has slots to allow
for an advance or retard of the cam

The rule of thumb is

advance yields more power at mid range and below
retard for more at midrange and above

Now ... to answer your Q as stated

NO ... You won't find ... a lot ... of power

In my experience your gain is gonna be subtle or maybe a bit more
but
Not the kind of gain that makes a huge difference

Grady