The vacuum break assembly is a crucial part of the choke and secondary air valve operation
Restoring the original Quadrajet carburetor will preserve your Corvette's value. You should avoid purchasing a "rebuilt-exchange" carburetor. Due to the mass-produced, similar architecture of the Quadrajet, a host of applications will fit your Corvette engine's manifold. However, neither a Buick 231 V-6 nor a 454 V-8 application will have the fuel metering components or tuning calibrations for a Corvette 350 V-8. Keep the original castings, jets, and metering rods!
Use quality parts when rebuilding a Quadrajet. Modern carburetor kits contain extra gaskets to allow wider model coverage. Be careful when matching gaskets to the originals. Small differences can create air or fuel leaks and poor performance. The stamping number on the carburetor identifies the carburetor's original application and the gasket kit needed.
Find a clean, dust-free place to work on your carburetor. Follow the steps shown and use a factory workshop manual to confirm specifications. Compare details with the instruction sheet found in a quality rebuild kit. Properly restored, your Corvette's Quadrajet will provide years of impressive performance-and fuel savings, too!
|Difficulty Index - 2 Wrenches|
|Anyone’s Project: no tools required||1 Wrench|
|Beginner: basic tools||2 Wrenches|
|Experienced: special tools||3 Wrenches|
|Accomplished: special tools and outside help||4 Wrenches|
|Professionals Only: send this work out||5 Wrenches|
After removing the vacuum break assembly, remove the clip that retains the choke link rod
The spring roll pin can remain in the top section (air horn) of the carburetor during serv
Secondary metering rods are calibrated and precisely shaped. Use care removing the rod hol
The air horn can now be removed. Loosen all hold-down screws (nine in this application). A
Gently pull upward on the power piston. The sleeve seal is hard plastic and seats snugly i
Stale fuel, a dry fuel bowl, or corrosive conditions contribute to carburetor troubles. Or
Loosening two screws removes the lower throttle body. Shown here is the gasket that seals
Verify the condition of critical parts. Dip metal parts in carburetor cleaner. When select
Carburetor dip, a thorough rinse, and compressed air cleaning of all tubes, nozzles, and v