383 build no power
checked vacumm readings again idle 9.5 out of gear 4.5 in gear. out of gear I can turn idle adjust in and engine will die like it supposed to,but I have to turn 3 turns for highest vacumm readings
A) Somethings not right with that. What idle rpm goes with that in-gear 4.5 inches? I've seen smaller engines with bigger cams have more Neutral vacuum, and more in-gear vacuum.
B) And is the idle timing still 30 degrees? And where does the timing drop to, at 4.5 inches? See, with the Vcan hooked to manifold vacuum, the timing at 4.5 will likely drop right out, leaving you with 12 less degrees. IIRC that would be 18*.If that happens, that's another nail in the coffin for running full-time vacuum to the Vcan.And if the power valve is opening at 4.5, the boosters may be dripping.But at 3 turns out on the mixture screws, that's likely not happening.
C) Ima thinking the butterflies are not open far enough.The transfers are not supplying quite enough fuel. That means the speed-screw needs to be cranked up a bit. Then To get the speed back down,either the secondarys need to be closed up, or the idle timing reduced, or you need to go hunting for air that is getting into the engine from some other uncontrolled source; such as a faulty brake booster, a faulty PCV system, a carb base gasket, a leaking intake manifold, a falling apart carb, or any other vacuum device, and finally a too-tight valve lash/faulty geometry (which takes us back to the leakdown test,per post #29).
