shaking at idle

[floorrtse]

My 440 shaking at idle speed (800rpm) so I think is there any who can give me some ideas where to find better idle quality.
my motor have next parts:
440 block 0,030 over
forged crank (original) 0,020 under
conn rod forged (orginal) 0,020 under
new bearings (all)clevelite 77
cam: Hughes 2328 Hydraulic 223/228 0,050
hughes lifters (preload 3/4 turn)
crane 1,6:1 roller rockers whit crane push rod
Head:Edelbrock 84cc aluminium (out of box)
intake:edelbrock RPM (new)
carbemon 750 mechanical secondaries (new)
ignition:MSD 6AL+MSD ready to run distributor+Blaster coil)
-initial 15 and 21degrees bushing =36degrees
damper:440 source damper(chrome)
Hughes timing chain and gear(new)
fuel pump:carter mechanical whit -6an line from pump to carb
-fuel pressure is 5psi

the vaacum is 14inch and it´s a stead

[345Dart]

if you are 100% positive you have no vacuum leaks (and with 14in of steady vacuum its highly unlikely) bump the initial to 20-22* and max @ 36*. with that cam and lift (1.6 rockers) you may have to go up to 900-1000rpm. and make sure you follow FBO tuning guide for demon carbs - it helps solve a lot of little idling problems. M2CsW