Idle sound

I've been disappointed by the almost no-lope idle of every cam I have installed in my 10.8 to 11.3 engine. But every cam was a fast-rate. And the 276/286/110 in it now is no exception. But it goes 93 in the 1/8th, and that is no disappointment at all.This cam doesn't lope until the idle is down to under 600, with the idle-timing backed off from 14* to 7*, which I do from the drivers seat,electronically, with a dial-back timing device.
The 292/292/108cam had the most lope.That cam had the latest closing intake, at 66*,70*,74*and 78*,(yup I tried that cam all over the place),vs 64* of the current cam.That 292 was just too big for my definition of street.