* Single-Plane ~ Open Plenum ~ High Rise * First introduced by Edelbrock in 1971. * Designed for Super/Stock cars. * Or Modified Production cars who wanted to utilize a single large CFM carburetor. * Directed a more uniform Air-Fuel Charge to the Cylinders. * Plowed the Air-Fuel into the Plenum floor at higher RPM's. * The most popular Intake for '4-Speed' Super/Stock cars back-in-the-day.
* A damn good unit, that worked well for high RPM's {3500 to 7500}. * Once you hit 5500 RPM's, it was like you went into another stage.