I run that cam in a 69 B body with a 440 and Holley Street Dominator (single plane intk) with a carter TQ.
At 650 idle rpm in neutral (Detroit area) it generates about 13" of Hg. The cam does have an idle to it. You will know there is a cam in there. 18 degrees initial and 36 total by 2000 rpm. Idle feed restrictions opened to .037".
That cam rocks. Good low end response and good pwr up to 5700 rpm.