How many CFM is a Rochester quadrajet?
750 CFM
Quadrajets can range anywhere in between 600 and 800 CFM. Most are rated 750 CFM or higher. Quadrajets are used by many GM street car enthusiasts; however, they are also disliked by just about as many.
How many CFM is a Rochester 4gc?
Produced in 486, 553, and 692 CFM ratings, the 4G uses a squarebore layout with a conventional fixed jet, power valve and accelerator pump metering scheme.
How good is a Rochester Quadrajet?
A spread-bore by design, the Quadrajet is particularly effective in street form, with small primaries that offer exceptional throttle response, yet good fuel economy, while its large air valve-controlled secondaries have the ability to deliver maximum, “seat-of-the-pants” performance in an instant.
What kind of carburetor is a Rochester Quadrajet?
The Rochester Quadrajet is a four barrel, two stage carburetor of down draft design . It has been proven to be dependable and a versatile performer as witnessed by its broad application and usage since its first introduc- tion in 1965.
What kind of choke does a Quadrajet use?
In its most basic form the Quadrajet was produced as the “4MV” (automatic choke/manifold choke stove), “4MC” (automatic choke, integral choke heat coil, heat tube) and the “4M” (manual choke).
Can a Quadrajet be used as a four barrel?
A lot of good and bad has been written about the use of a Rochester Quadrajet carburetor as a replacement four-barrel. Some enthusiasts love them while others avoid them like the plague. The truth is, a properly tuned Quadrajet can be just as efficient and reliable as a bolt-on substitute performance carburetor.
Do you need a vacuum gauge to tune a Quadrajet?
The first thing you’ll hear is that you will need a vacuum gauge in order to get your carburetor tuned properly. And that without one, you’ll never be able to fine-tune your Quadrajet with precision. It’s true! So I went ahead and purchased an inexpensive engine vacuum tester gauge online.