Thread: Trying to rejet my edelbrock 600 cfm

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Here's everything you need to know to dial in an Edelbrock Performer or Carter AFB carburetor...
http://www.edelbrock.com/automotive_...ers_manual.pdf
A high-rise, dual-plane intake such as the Edelbrock Performer RPM will add 30-40 hp to the motor, along with the same increases in torque. The standard low-rise Performer is little more than a lightweight stock manifold, meant to provide good driveability from idle to 4000 (back and forth to Bingo) and remove weight from the front of the vehicle.

A rule of thumb is, the jets and the rods change about equally, that is, a size bigger jets is the same as a size smaller rods. Of course, you have to consider the fact that the jets are stepped, so you can tailor the different speed ranges with different steps. The big part is cruise, the smaller tip is power. Changing the springs changes where the steps come into action.