Large rpm drop

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Engine Specs:
360, 11:1, magnum heads, comp cam (specs inn picture), 750 holley (tuned with wideband, still slightly rich at idle I believe is idling off main circuit)
I went to the comp cams lobe catalog and looked up your HR lobes
nmbr dur .050 .200 lobe 106 110 1.5 1.6 1.7
3314 276 224 145 .335 .068 .055 .503 .536 .570
3315 282 230 151 .340 .078 .064 .510 .544 .578
small block buick journal used for stroker chevies
MI 27.1 (13.4 opening 13.7 closing
just using a regular sbc journal 3192 would have given you 152 @200 and .567lift with a 1.5 rocker on the intake
using a BBC or Mopar sized journal I do not see one for 1.5 rockers
a faster lift rate
3007 270 220 145 .357 .062 .049 .536 you could get same at .200 with 5 degrees less seat if you needed more dynamic compression and a little more lift
3009 276 226 150 .359 .072 .058 .539 or at the same seat duration if 276 is the right number
MI 26.6 (13.1/13.5) on these (which you may not want to do with the heavier mopar valves)
lots of other choices
run what you have
let's see how it works
should be reliable even if it's not perfect but who knows