I've read multiple threads about spark plug gapping and spark plug choice.

seems like the overall choice of plugs is the AC Delco

But when it comes to gapping them, I have read .35 and .45 and .60

Factory says .60, but I read in one of the threads that there was a TSB? that said to gap them at .35? And then on another thread there was talk of .45

I pulled a plug last night just for fun and I have Champion 3013's with a .60 gap.

So, for clarification, what's the prop er plug and gap? and why?
<!-- / message --> <!-- controls -->

 

for your truck, the gap is .060". gaps are based on the amount of air and fuel coming into the cylinder, and compression. non injected gm v8's are typically .035". but with injection having a higher incoming pressure, it needs to be burnt quicker, harder. follow what is recommended for your rig, which should be .060". also, if you're using platinum tip plugs, do not gap those at all. you'll damage the tip.

 

Since you aren't supposed to use the center electrode as a fulcrum when gapping plugs, how can u hurt a platinum tip plug?

The reason for a larger gap is so the breakdown voltage is higher causing a hotter spark.