Big Blocks

BJR Racing said
The 440 has 11.76:1, the #'s are rear wheel and generally when the cams increase in lift and duration the overlap increases also, what I found is that as OL increases the detanation becomes more of a problem so timing has to be reduced.

Is this at a higher rpm, more cyl fill from increased scavenging?

What cam specs are we deviating from that would lead to this when you already have 11.76?

Is less timing , to extent, a bad thing?