T-Port sync
You have too much Idle timing, so the mixture screws are turned out too far and the transfers are almost closed. It will idle this way, but the transfers stop flowing and dry up. Then when you touch the gaspedal, the transfers have to start up again.And then you get a hesitation. Between that and the low cylinder pressure,(maybe 8.5 or so) it's a doubly whammy tuning issue.
The fuel pump, if deadheading,is putting the pressure on the float valves, so maybe the level creeps, and the idle gets richer and richer.
I suggest
Carb Tunning
I know you said the speed screw was set to be "still on the idle circuit", But that can mean almost anything. With that cam,you want the T-Port exposure to be about square.The mixture screws out around 1Turn from lightly seated, and the idle timing down at 12ish. Idle should come in around 650 in gear, maybe up to 700, but the neutral should not go over 750. All this once the tune is in and no vacuum leaks, including not sucking air from the crankcase. Make sure the plugs are hot enough.I think 68s are too big on the front, but that should not affect the idle one bit. That cam should idle higher than 11@800, oops sorry, you said in drive. Check it in neutral after the changes are made.
Yeah I'm guessing,lol.
Humor me........
That cam installed at 106 per directions, puts your ICA at 60*, and with 8.5SCR, the Dcr is 7.00,dare I say it; kindof low, so the tune will need to be dead on for it to be FUN!
That Stealth 8022 IIRC is a big-port intake, while an excellent manifold, it is too much for your combo. With the small-port heads and 8.5Scr, a smallport dualplane will make the engine much more responsive.The lack of air-velocity through it at idle may also be a contributor, to both the high idle requirement and the hesitation.
