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Just rebuilt my 383 took around 3 months ,the carb.is a Holley 750 double pumper an motor has slight miss . Has rad cam anyway I think the air fuel is out of wack an ive tried almost everything started a 1 1/2 out at 1/4 turns after that can't get a good timing because of miss ,could the carb be messed up after sitting for 3 months, or maybe I have one of the intake valves is staying open slightly im lost on this slight miss issue replaced cap rotor wires,
 

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All the time miss or now and then?

Does it go away when the engine gets warmed up?

How big is the cam?

A miss so big you can’t time the engine?

Intake is a what?

What is the compression?

Shut down for 3 months with leaving the carb wet with fuel to evaporate is an invitation to problems but not necessarily the problem.

Bogie
 
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