How much can I advance the spark on a 2000 Chevy Silverado ln7? I watch one of the driveway engineers videos and on a 99 he raised his four degrees all across the board on the base parking here. When I did it my truck wouldn't start.

My truck is stock besides cold air intake and EGR delete I'm trying to learn some ins and outs but don't have much spare time. From the research I've done these trucks were tuned either rich or lean I can't remember and a decent little amount of power can be added just with tuning. What other adjustments came be made for power?

Does anyone happen to have a bin file that's been tuned for power that I can compare to? I'm running a 1256 os