Qjet Connection Help
 

I'm replacing a Holley 4175 with a Qjet and have questions about the connections on the Qjet. There are no similar connections on the Holley.

I've circled the ones I don't know what connects to them, front and rear of the Qjet. Do I just cap / plug these?

Thanks in advance for any replies.

Well that’s not a Pontiac carb first off, but that being said, that big front Top 3/8” nipple is for the fuel bowl vent to the charcoal tank which you do not have I will assume.

The other two smaller ones I forget if they are full manifold vacuum or ported.
If no one else can give you a answer for those two then just cap then, start the motor a check when they work .
I think I recall that on that type of Q jet the rear one on top goes to either the air cleaner or it auto trans vacuum.
Sorry, that’s all the help I can offer!