quadrajet
There is no reason you would have to.
It was a 4 barrel Rochester ( Quadrajet ) Carburetor.
Rochester Quadrajet
Usually a Rochester Quadrajet.
Yes. There are books dedicated to the Rochester Quadrajet.
www.carburetor.ca/carbs/kits/CK142.htm - 21k -
It came with a Rochester 4 barrell Quadrajet.
It came with a Rochester 4 barrell Quadrajet.
To route the vacuum lines for a 4-barrel Quadrajet carburetor, first identify the vacuum ports: one for the distributor advance, one for the power brake booster, and possibly others for accessories. Connect the port for the distributor advance to a manifold vacuum source, usually located on the carburetor base. The power brake booster should also connect to a manifold vacuum source for optimal performance. Ensure all connections are secure and that the lines are routed away from heat sources to prevent damage.
The 1978 Trans Am typically came equipped with a Rochester Quadrajet carburetor. This four-barrel carburetor was commonly used in many GM vehicles during that era and was known for its performance and efficiency. Depending on the engine option, the specific tuning and jetting of the Quadrajet could vary. Some models also offered the option of a Holley carburetor, but the Rochester is the most prevalent for that year.
To convert a Quadrajet to a Carter carburetor, you'll need to first remove the Quadrajet from the intake manifold and clean the mounting surface. Next, install the Carter carburetor using an appropriate adapter if necessary, as the bolt patterns may differ. Ensure the throttle linkage and fuel lines are properly connected, and adjust the float level and idle settings per the Carter carburetor specifications. Finally, check for any vacuum leaks and make adjustments as needed for optimal performance.