manifold vacuum fitting?
 

will the stock "t" manifold vacuum fitting clear with a holley carb?

ttt

are you talking about the vaccum fitting for the trans modulater thats behind the carb? if so then i wouldn't count on it fitting. i ran a 700 dp and an edelbrock intake before and had to use a 1 inch carb spacer for the rear bowl to clear the fitting. but different intakes locate the fitting at different heights so it depends on what intake your using

T
 

Mine didn't clear, however, it did after I cut the horizontals down slightly.