Hey everyone I'm wondering if some of you with more knowledge about the older 5.0s can give me some advice. This started at the beginning of summer when it started getting hot, my 95 get will now ping constantly when the RPM is brought up to 2k or more. When the issue started it was at 12* of timing on 91 octane, I still run 91 but have backed the timing all the way off to 8*. I have not had time with work to pull the plugs but replacing them and cleaning the top end with seafoam are on my to do list. Can anyone think of a common cause for this issue or a cause specific to these engines? Thanks in advance.