I've been reading a lot of timing threads / gathering information as I approach that part of my tuning. I am comfortable with timing vs. load vs. RPM and why timing would generally be increased or decreased as load and RPM change. I will start conservatively (stock table in the apyp bin) and work from there.

In a lot of the threads I came across, members posted about having total advance in at a certain RPM (i.e. 38 degrees by 3000 rpm, etc) but did not specify at what LV8 value this was for. I'm assuming it's not 38 degrees for all LV8 values at 3000 rpm, so when something like that is posted, is it generally for lower or higher loads?

Hopefully my question makes sense...

 

The numbers you posted are *generally correct* for a carb'd/ normal distributor engine. The chevy small block is known to like total timing numbers in the high 30's under WOT. Beware- there are variables. Better, more modern heads like less timing, higher compression may require less timing, and even cam selection will like different numbers too. With EFI, you can more finely tune your curve, but you need to find out what your engine likes. Under cruise conditions you can run much more advance too, which may help fuel economy. You'll have to learn by trial and error here. There are no timing values that work for everyone.

 

Thank you very much for the information

When modifying the timing vs. rpm vs. load tables, I am assuming (bad idea) that the "curve" or 3D graph should be relatively smooth, meaning no major increases or decreases from one value to the next, correct?

I know I've got a lot of experimentation and data logging ahead of me, and I'm still fine tuning the fueling, but I can already tell the engine likes more advance at WOT / higher loads than the stock apyp table has.