Looking for spark advice - '98 blown 5.7 truck

[Edward D]

What do the '98 5.7 trucks with a blower "like" for spark? Not sure of the boost, but for now assume it's 5-6#. I know many of the different GM models have veryu different spark requirements, but I have no experience dealing with one of these and would rather give it a good safe maximum spark. I assume an A/F at WOT should be in the 11.5-12.0 range. Any other tuning tips would be appreciated!
Thanks in advance.

[GMPX]

I don't really know an exact figure because there is just too many variables. Perhaps start at around 12 - 15 total timing, maybe less then, creep up on it.

Cheers,
Ross

[hquick]

Here's the tune I'm running...don't know if it'll help?

[Edward D]

Thanks! Greatly appreciated!