Quote:

---

Have you recurved your distributor since the rebuild?

---

Quote:

---

Some times you have to drill holes with high duration cams. But before you do try giving it more initial advance and that may allow you to turn down the throttle for proper transfer slot alignment.

---

Quote:

---

Now, I am noticing gas dribbling out of the boosters in the center carb

---

This is ususally caused by the float level being too high. Try lowering the float just for the heck of it. You will probably have to make some carb adjustments after doing this.

Quote:

---

Have you recurved your distributor since the rebuild? I was about to drill holes in my plates but after getting some advice from a member on here and spending some time with the distributor, it runs like a new car!

---

Quote:

---

This is ususally caused by the float level being too high. Try lowering the float just for the heck of it. You will probably have to make some carb adjustments after doing this.

---

Quote:

---

Dave,
I have gone as far as 30BTDC and though it did improve it still "dribbled".
I know the "509" is not that radical of a cam. In fact, it has been pretty "street friendly" at least for me. Tall gears and a high stall has also been a contributing factor Otherwise, I cannot see why it should be so bad to dial in the idle. I have read where folks have gotten 11-12" vacuum at idle with this cam but the best I ever got was 7".
Anyway, I am going to tinker a bit more and play aroud with some of these great suggestions from you guys.
I'll keep you posted.
Thanx!!

---

Quote:

---

Quote:
--------------------------------------------------------------------------------

This is ususally caused by the float level being too high. Try lowering the float just for the heck of it. You will probably have to make some carb adjustments after doing this.


--------------------------------------------------------------------------------


I have the center carb just to the bottom of the sightglass (have clear plugs instead of screws) and the outboards are in the middle. I am running a Holley blue pump regulated to 6PSI as the inline gauge confirms.

---

As I said, this is the usual case. I would still lower the outside carb float levels to the bottom of the site glass hole. The next thing I would do is check the power valve and power valve gasket. Make sure that the gasket is the right one for the valve. Make sure the power valve is the right size.
If you have the throttle blades to far open, exposing too much of the transfer slots, this will cause an increase in velocity through the boosters and syphon gas. Having the outside carbs float level higher may be causing an over rich condition making it necessary to open the center carb idle speed screw too far and creating the problem you are experiencing. I'm just thinking of different senerios that can cause what you are seeing. Fuel from the boosters comes from the main jets, or power valve. Both feed based on velocity passing through the boosters. With the throttle blades closed and little or no transfer slots exposed, there should be no gas dripping from the boosters. As you open the throttle blades, velocity increases and the gas should begin to syphon as you transfer to the cruise and power circuits.

Your distributor? Is it a stock unit? Are you running vacuum advance? Do you have it hooked to port or to manifold? If to ported vacuum, then try switching to manifold. This will advance the distributor at an idle and cruise, allowing the idle speed to be slowed down.