Vacume advance

[CUDA JAS]

So i like running that vacume advance on my 360 (it improves gas mileage a bit).

But, when I run it, the car surges badly under light throtle cruise.

I think the vac can is adjustable.  Would the surge be caused by to much advance or to little.

Any help would be appreciated.

Jas

[BIGSHCLUNK]

No expert here for sure but are you taking vacum off the correct port. The one w/o vac at idle.. 

[CUDA JAS]

No expert here for sure but are you taking vacum off the correct port. The one w/o vac at idle.. 

yep 

no issues at idle  only part throtle 

jas

[Changin Gears]

Surge can be caused by too much advance.

[BIGSHCLUNK]

Did you set your timing w vac adv disconected?

[CUDA JAS]

Did you set your timing w vac adv disconected?

Yes.  the car does not surge when the vacume advance is disconnected.

Jas

[CUDA JAS]

Surge can be caused by too much advance.

Cool, I will try pulling some out,

Jas

[the_engineers]

I'm having the same problem.  How do you adjust the vacuum advance?  I've got the MP distributor from the Elec. Ign. conversion kit.

[Chryco Psycho]

small allen wrench inserted into the vacuum nipple , counterclockwise reduces advance