AED offers only the highest Quality Power Valves designed specifically for your Holley performance carburetor. All AED Power Valves are hi-flow units with several vacuum ratings to give you the ultimate in tuning capability. Also available are Alcohol Power Valves designed for the special fuel demands of alcohol. We also offer Power Valve Block off plugs for situations where you don't want to use a power valve. To keep your power valve in tact we provide a special kit to prevent power valve blowout in the case of engine backfires. All AED carburetors come equiped with this kit installed.

We cover the complete spectrum of Needle and Seats for gasoline and alcohol carburetors. First we have the traditional .110” Viton hi-flow units designed for up to 650 HP on gas. For power levels over 650 HP with single carburetors or with marginal fuel systems we recommend our special .125” viton tipped assemblies which flow approximately 25% more fuel than the .110’s and will accept up to 7-8 pounds of fuel pressure. For alcohol applications our special .150” stainless steel needle and seats are the ultimate in fuel capacity and seating ability where optimum fuel flow is required. These special hi-flow needle and seats will not accept the standard 7-8 psi at idle like conventional needle and seats. Reduced fuel pressure at idle is required to properly seat at idle. All assemblies come complete with our special reusable needle and seat gaskets.

We offer complete stock replacement Baseplates for replacing worn or damaged factory units. For the modifier or enthusiast we have our “Pro-Series” Baseplates that features machined throttle shafts, machined throttle plates, hi-flow screws, and plugged vacuum ports offering vastly increased airflow over conventional baseplates. These come completely machined and assembled ready to install. Just add an (A) behind the regular baseplate #. We also offer stock replacement and special machined hi-flow throttle plates and hi-flow screws to enhance your existing baseplate by increasing airflow up to 50 cfm. Check "Billet" section for additional "Billet Baseplates".

We offer Holley performance fuel bowls in the center pivot design for high performance fuel handling. They are available bare or complete with brass float, high-flow needle & seat, sight plug, 30cc pump assembly, & adjusted ready to go. Add an A to end of part number for complete Bowls. We also have stock replacement floats for side-hung float bowls (600 style), and stock replacement floats in brass, nitrophyl, and duracron for center-hung float bowls (double pumper). For racing we offer specially modified nitrophyl floats for sideways mount, oval track, and drag race applications. These are a must in high G-Force situations where maintaining a consistent fuel level is paramount. All racing floats are machined, weighted, and sealed.

We offer a wide selection of quality Holley replacement gaskets. They come attractively skin packaged in (10) packs for display. New blue non-stick gaskets are listed in section below also & come 5 to a pack. Metering gaskets shouldn't be reused for the best seal.

Virtually all single carbureted drag cars need rear jet extensions. During acceleration and high g-forces, fuel is pushed to the rear-most portion of the float bowl, uncovering the jets and creating a lean condition, which reduces performance. Our special bored stainless steel extensions have a special half-moon shape that assures plenty of fuel volume and clears the stock floats. Kit includes jet extensions, reusable gaskets, and reusable nylon bowl screw gaskets. Our new kit features machined float with custom jet extensions that gives you maximum float drop for high fuel demand applications.
We have two different Jet kits designed to meet all your jetting needs. These two kits contain (18) pairs of jets in a numbered reusable poly box for storage. That’s a total of 36 jets at a great price. Check "Billet" section for more options.

We feature two styles of discharge nozzles for accelerator pump circuit tuning: Standard and Tube style. Available in a variety of sizes, they are skin packaged two per card with gaskets. We also offer special hi-flow hollow discharge nozzle screws for higher pump volume. We recommend Tube type squirters when additional top end fuel enrichment is required.
To tune your squirter delivery curve we have a complete selection of Accelerator Pump Cams with varying opening rates & delivery volumes. In cases where you need additional total squirter volume (big carburetor - tight converter - heavy car) we offer a 50cc Pump Kit that comes complete to provide the additional volume.

Vacuum secondary carburetors are designed for universal installation on varying engine sizes and power levels. In turn great improvements can be made by tailoring secondary opening rates to specific engine combinations. We have seen as much as 35 ft.-lbs. of torque increase on a 355 CID engine when combined with our machined throttle plates and hi-flow screws. We offer a complete spring kit and a kit that contains a sprint kit plus a quick change removable vacuum housing that facilitates thirty second spring changes.
Our Metering Block Conversion Kits are designed to convert 4160 carburetors to 4150 style with the addition of new metering blocks and hardware kits that provide you with the means to effectively tune the secondary side of the carburetor over the nonadjustable jet plates. Includes all components necessary except main jets.
Finally a fully adjustable secondary Jet Plate. Now you can tune your vacuum secondary carburetor without buying multiple jet plates. Just remove the bowl & change jets like a conventional metering block. The advantage is you can use all your existing components like fuel lines and bowl screws & not increase the length of your carburetor. Great for multiple carb applications where carb length is a problem.

We offer both styles of accelerator pump diaphragms for Holley carburetors. They are made from the finest material for long life and a leakproof seal. They come attractively skin packaged for display.