Engine running away after carb rebuild....

Cuda416 said
That's where I was confused initially, but apparently a low vacuum condition can cause the carb to "add" fuel into the venturi because it acts like it's under a load, or so I've seen/read. Sounds odd but it can apparently happen with these. I'm just not sure it's going to cause a run-away this severe.

That said, I am more then open to other ideas.

-=C
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Only if the throttle blades are waaaaay too far open.
I tell you what, when the low-speed circuit is working right, you can take the whole top of the carb off, while the engine is idling, and it will continue to idle nicely. If the boosters are flowing the throttle blades are waaaaaay far open.