5º while cranking, 15º baseline at idle but the MegaSquirt will adjust it up as high as 23º or down as low as 5º to meet a programmed idle target (I don't have an idle air valve on this engine..yet). WOT is currently set at 38º at this elevation (6500'+, ~80kPa atm pressure) and around 36º at sea level (yes it automatically adjusts). I'm still working out where to set cruising timing as I have been adjusting the part throttle fueling, and with those changes I make adjustments to the timing (leaner = more timing).
I've incrementally worked my way to 5,800rpm, but now my rev limiter is set to 6,500rpm and it won't reach that. I tried a few times =P So time to set it down to 5,800rpm and the shift light at 5,500 or so.
Rebuilding an OHC Pontiac 250 with EFI and a Turbo