Playing with cam gears

[perrytheplatypus157]

When adjusting cams, what is the difference between shifting the powerband without changing overlap, and adjusting overlap but not moving the powerband? When I say "moving the powerband" I mean moving each cam gear the same amount one way. i.e. (-1,-1) or (3,3). I've read the Cam Gear Tuning for Dummies thread but maybe it explains clearly and I'm completely missing it.

http://www.dsmtuners.com/threads/cam-gear-tuning-for-dummies-understanding-what-is-happening.375887/

 

[Pulids27]

You shouldn't really mess with them unless your really doing piston to valve clearance and everything and wanting a specific cam LSA. A lot of big powered 4g63's are just degreed at "0" making lots of good power.

 

[perrytheplatypus157]

I agree it shouldn't be played with too much unless proper tools are to be had, but how is someone to learn without experimenting? I'd only play with a few cam degrees. Yes, I know it's dangerous, but it's a personal risk I'm willing to take. But what would be the difference between changing the LSA versus changing the relation of the cams to the crank?

 

[dsmspick]

Degreeing them in may help a big cam idle friend of mine didn't pull enough vacuum at idle till the cams were degreed in.