They only open on demand, Higher RPM. There is an excellent reference book available that can be very helpful when fine tuning. I believe it is called "How to rebuild and modify a Rochester quadrajet". This book should be a part of every carb rebuilder's toolbox.
Go to Amazon books and type in rochester quadrajet. You'll find several choices of books that explain step by step how to tune a quadrajet.
quadrajet
Rochester Quadrajet
Rochester Quadrajet.
It will work with an adapter you can get from summit or other parts stores.It would take the same adapter as a holley to a quadrajet since its a replacement for the quadrajet on gm cars.
checker auto store
Usually a Rochester Quadrajet.
Yes. There are books dedicated to the Rochester Quadrajet.
www.carburetor.ca/carbs/kits/CK142.htm - 21k -
Rochester Quadrajet
There is no reason you would have to.