Fighting with this 440 idle!

[turbine68rt]

Are you suggesting I switch something up?

Assuming that when I bump up the initial timing to 18 degrees I should also change the FBO plate to the slot labeled16 degrees?

If you feel that you have the most output with 34° total, yes, you could bump the initial up and have less mechanical.

 

[PlymouthMakesIt]

Is the hot idle compensator still active on the carb, it creates a deliberate vacuum leak to intentionally speed the idle up when hot

 

[turbine68rt]

Is the hot idle compensator still active on the carb, it creates a deliberate vacuum leak to intentionally speed the idle up when hot

The compensator is usually found on a/c applications.

 

[sogtx]

The compensator is usually found on a/c applications.

And later Six Packs -
I usually hi temp silicione that port off .
So i can guarantee thats not causing hi idle .

Ill bet your issue is with secondaries cracked open
Or that FBO **** is junk .

I like the MP distributors that came with adjustable slots
with the torx screw .

I am having a similar woe on another car , and
When u figure it out - you will be kicking yourself.

But it sounds like youre on the right tract

Use the kiss principle - keep it simple
Get rid of whats not typical .

But it may be as stupid as that secondary link .

 

[turbine68rt]

And later Six Packs -
I usually hi temp silicione that port off .
So i can guarantee thats not causing hi idle .

Ill bet your issue is with secondaries cracked open
Or that FBO **** is junk .

I like the MP distributors that came with adjustable slots
with the torx screw .

I am having a similar woe on another car , and
When u figure it out - you will be kicking yourself.

But it sounds like youre on the right tract

Use the kiss principle - keep it simple
Get rid of whats not typical .

But it may be as stupid as that secondary link .

OP did a follow up to his issue in post 23.