Originally Posted by Black02Z71

I don't understand why gm puts so little timing in these things from the factory, emissions maybe? I was just comparing my current advance table vs the factory 5.3L table, factory only has 13-16 degrees vs my current 27-29 at wot. I then looked at what the predator programer was running for timming and it's only 18-21. So you can see how you can pick up 30hp+ with tuning.

95 hp may sound like a lot, but this is at the engine, at the wheels it would only be like a 75 ish hp gain, which is still a pretty big gain.