EXCLUSIVE NEEDLE DESIGN...
Edelbrock's unique needle design features a tapered cut on the back side only allowing it to remain stable in the bore as it moves up and down. Other
designs have clearance on all sides which leads to inconsistent metering
1 - Tapered needles move around with airflow and engine vibration for uneven fuel delivery.
2 & 3 - Edelbrock needles are cut on the backside creating a stable cross-sectional opening... they don't move around, allowing for consistent fuel atomization.
 Will not work with original equipment backing plate |
 |
SIMPLE TO ADJUST
Changing the fuel calibration is easy with the Edelbrock Performer Series carb. Determine what area of the throttle position needs to be adjusted.
Idle is controlled by an idle air bleed system which is changed by replacing the air bleed jet itself in the mouth of the carburetor.
The larger the air bleed jet used the leaner your engine will idle. All EPS carbs are shipped with two spare air bleeds, one richer and one leaner.
Off-idle to 1/3 throttle is controlled by the needle position in the slide. This is adjusted with the metering adjustment tool (which is included with all EPS
carburetors) by opening the throttle to wide open and engaging the tool into the needle adjuster. Turn it to the right to richen or left to lean.
1/3-2/3 throttle is controlled by the needle size itself. The higher the number needle the richer this throttle position will become.
Beyond 2/3 throttle the new EPS main Jet takes control. The main jet allows more or less fuel depending on the size of jet used. The jet is
accessed through a plug in the bottom of the float bowl. All EPS carbs are shipped with two spare main jets, one richer and one leaner.
|
|
Edelbrock carb
Stock carb
