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Holley 850 annular booster.
81 air bleeds and came with 37 idle feed restrictors, mixture screws out 1 1/8, idle is 13.5-14, lean cruise is 12.5, wot is 12.8. So I went with 34 IFR, mixture screws are now out 1 3/4, idle 14, lean cruise the same? WTH?

Lowered the floats, nc, any body have any other idea how to get the lean cruise above at least 13.5?
 

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What cam? Specs? New carb? Rebuilt? Holley gets them pretty darn close out of the factory as they flow test each carb.
 

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Timing made a good change for me when I was playing with my AFR gauge.

My IFR's are at 1/2-3/4 turn out
Closed the secondary's at idle (1/4 turn off seat so not fullyclosed/seated)
Played with my timing

All together added up to 13.8-14.5 @ idle once warm
Vacuum went up almost 2 points
Mid-High 12's @ WOT
Cruise is 14-15 depending on speed.

Mighty Demon 750 DP
73/85
6.5 PV
38 HSAB
 

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