From the postwar era to the mid-'80s, General Motors' Rochester Division defined carburetor performance. Rochester also developed the mechanical fuel injection systems found on '57-'59 full-size ...

Pontiac began using the Rochester Quadrajet carburetor on certain V-8 applications in '67, and it was the Division's four-barrel of choice from '68 onward. With literally hundreds of thousands of ...

There is a reason Holley and Demon carburetors are widely considered among the best high-performance carburetors available. They are designed to make optimum power, easy to adjust, and relatively ...

The choke valve in an engine's carburetor, whether it's a Holley carburetor or another brand, helps a cold engine start by restricting some of the airflow into it. When the engine is cold, the choke ...

"Quadrabog," "Quadrajunk," and a host of other time proven nicknames define GM's most notorious four-barrel carburetor. Enthusiasts either love it or hate it. However, the Quadrajet is easily the most ...