Advance and transfer slots

AJ/FormS said
If you are not getting an off-idle tip in sag at 10/12 degrees, AND, the trans does not bang into gear, then the Idle-Timing and fueling, is darn close, if perhaps a tad rich.

BTW, synchronizing the T-slot to the mixture screws, to the idle-timing was never My own idea, It's been around forever.

Just how big is your cam,

Cam is a Hughes 3844 (237º/243º@ .050" 108ºLSA). Installed straight up 'per Hughes recommendation. Cam card numbers matched my degree wheel numbers within 1/2º, so there does not seem to be anything 'ground in' to the cam.

AJ/FormS said
and
I assume you have an automatic

Now now...it's in my sig. A833.

AJ/FormS said
WHAT carb, and
does it have a 4-corner Idle system?

Holley 4779. Yes. 4-corner idle. I reset those several times during my last 'fuss'.

AJ/FormS said
Single or dual plane?

Edelbrock Performer RPM

AJ/FormS said
What is the operating elevation.

1200'

AJ/FormS said
At to your "hot soak" situation.
"Hot soak" implies after the engine is shut down, and obviously ignition timing would have nothing to do with that. So Ima guessing you mean something else.

I don't mean something else. I think they are related. The engine bay does not run as hot with more advance...that advance keeps some heat OUT of the headers. The less heat under the hood, the less hot soak problem I'll have. That's the plan anyway. The hot soak issue is a work in progress and not something I'm addressing here.