[Eljaro]

When I had a holley 850 DP on my 427 I used to stick to 12º initial timing and 36º max. I always had runon and dieseling problems and the engine would run hot in idle.
After changing to Webers and using 20º initial timing, I have come to the conclusion that the engine needs more initial timing even if using Holleys.
Hi perfomance parts used in the engines today allow for this and it is also necessary.
I think 10º will only give you problems and no benefits, since your starter will have no problems turning your engine over and your engine will not get as hot when idling.