Engine Idle Drops A Lot in D

74Dart318 said
I just hooked up the vacuum gauge to the manifold vacuum port on the driver's side of the Eddy carb.

At 750rpm with about 18° timing the vacuum gauge is only reading 10 in.

I am guessing I should be searching for a vacuum leak.

Don't know much about the eddy carbs but yes, 10 inches seems low. Mine with a holly is 14 inches at 800 and about 10 in gear
Edit: Mine has the same cam and heads as yours.