383roller

i just finished w/my carb swap, and now my carb is idling rich. I have played w/the timing and mixture srews, but it didnt help.It also stumbles at low engine speeds or in high gear. My engine builder said something about a power valve swap, some people have told me to go down a couple of jet sizes, or drill holes in the throttle blades. Anyone had similar problems w/their demon? the carb is brand new out if the box. It was fuel injection and still has a high volume pump, i put the right fuel pressure regulator on it and a fuel pressure guage on it, and it reads about 7psi. The carb also builds up and smokes when idling. Im tired of my eyes being burned by the fumes.

tazs2000

i had the same thing with mt t/a and i put a new power valve hop that helps

84 z28

The jets have nothing to do with the rich idle. What are all 4 corners turned too and where are your floats set at in the sight glass? And do you have the idle eze version ? Whats the power vavle in it now a 6.5 ?

xpndbl3

iTrader: (5)

what's vacuum at idle? what size cam? I'm guessing you need more initial timing and have a larger cam.