Does the Holley system allow you to use all the factory sensors or how exactly is it setup?

The biggest things to watch for in knock retard and with that in mind the timing comes down to how you have it "modded" or setup, what fuel you are running and so on.


You didn't ask about what timing where (yes that's worded bad) so it's hard to say much there either.

Stock calibrations run anywhere from 40-20º at low load and cruising speeds and somewhere around 14-15º of at WOT with the stock pulley. Adding exhaust mods and so on can increase the WOT timing that you may be able to run depending on knock.