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  3. EDELBROCK 12625

EDELBROCK Hdq Carburetor Power Valve Hg Demon 085347126255 2.5

12625 Edelbrock Hdq Carburetor Power Valve 2.5 Inch Hg Demon

( Brand: Edelbrock ), ( Part Type: Valve Carburetor ), ( Universal Fitment: Yes ), ( California Prop 65 Warning: False ), ( UPC: 085347126255 ), ( Manufacturer Part Number: 12625 )

Review EDELBROCK Hdq Carburetor Power Valve 2.5 Inch Hg Demon

The Edelbrock 12625 HDQ Carburetor Power Valve is a high-performance component designed to deliver superior fuel delivery and increased engine power for your automotive application. This power valve is part of Edelbrock's Demon series, which is engineered for high-performance racing applications.

The 1.25-inch diameter, 2.5-inch long power valve is constructed from heavy-duty, forged and machined billet aluminum. Its hard anodized finish not only provides a sleek appearance but also ensures durability and resistance to corrosion. The valve's stout design includes a larger 3/8-inch pushrod diameter, which helps to reduce deflection under high engine vacuum and boost conditions.

The power valve features a 2.5-inch lift height, which is critical for maximizing vacuum and boost, and is necessary for proper fuel flow in high-performance applications. The valve's unique design also includes a built-in adjustable secondary needle valve, allowing users to fine-tune fuel delivery for optimal engine performance.

The Edelbrock 12625 HDQ Carburetor Power Valve is compatible with Edelbrock Performer, AVS, and Quadrajet carburetors, making it a versatile choice for a wide range of performance applications. Its high-quality construction, combined with its adjustable features, make it an excellent choice for racers, hot rodders, and enthusiasts seeking to extract maximum power and performance from their engines.

This power valve is backed by Edelbrock's reputation for producing top-quality, high-performance components, and is designed to deliver consistent, reliable performance under even the most demanding conditions. Whether you're looking to take your street rod to the next level or compete on the race track, the Edelbrock 12625 HDQ Carburetor Power Valve is an essential upgrade for your engine.

The Edelbrock 12625 HDQ Carburetor Power Valve 2.5 HG Demon is a performance-enhancing component designed to improve the air-fuel mixture in your carbureted engine. Here are some pros and cons that might help you decide if this product is right for you.

Pros:

1. Enhanced Engine Performance: The 2.5-inch diameter, 2.5-inch height power valve can provide improved engine response, acceleration, and overall power by optimizing the fuel mixture.

2. Durable Design: Made from high-quality materials, including a billet aluminum housing and hardened steel valve, the Edelbrock power valve is designed to withstand the rigors of high-performance applications.

3. Adjustability: The power valve offers adjustability, allowing you to fine-tune the fuel mixture for different driving conditions and engine setups.

4. Improved Idle Quality: A properly functioning power valve can help improve idle quality and stability, reducing engine surging and stalling.

Cons:

1. Complex Installation: Installing a power valve can be a complex process, requiring the removal of the carburetor bowl and other components. It may require specialized tools and a good understanding of carburetor tuning.

2. Additional Cost: The Edelbrock power valve is a premium component, and the cost may be a concern for some budget-conscious enthusiasts.

3. Potential for Over-Fueling: Improperly adjusting the power valve can result in over-fueling, which can lead to various issues, including misfiring, rough idling, and decreased fuel efficiency.

Conclusion:

The Edelbrock 12625 HDQ Carburetor Power Valve 2.5 HG Demon can provide significant performance gains for carbureted engines, but it comes with some challenges. The complex installation process, potential for over-fueling, and additional cost are all factors to consider before making a purchase.

If you are comfortable with carburetor tuning and willing to invest in a high-performance component, the Edelbrock power valve could be an excellent addition to your engine setup. However, if you are looking for a more straightforward upgrade or have limited experience with carburetor tuning, you might want to consider other options.

Recommendation:

If you are considering the Edelbrock 12625 HDQ Carburetor Power Valve 2.5 HG Demon, make sure you have a solid understanding of carburetor tuning and are prepared for the complex installation process. It's also essential to follow the manufacturer's instructions carefully to avoid over-fueling issues.

Additionally, consider your budget and the specific performance goals for your engine. If the power valve fits within your budget and aligns with your desired performance improvements, it could be an excellent investment. However, if you are looking for a more cost-effective option, you might want to explore other upgrades, such as an aftermarket air filter or exhaust system.

part # 12625 prices

  • $22.99-$139.99

specifications carbcaddie:

  • brand: Edelbrock
  • part type: Valve Carburetor
  • universal fitment: Yes
  • california prop 65 warning: False
  • upc: 085347126255
  • manufacturer part number: 12625

seller carbcaddie:

  • rating: 99.2%
  • # reviews: 323872

general carbcaddie:

  • condition: New
  • Car Truck Parts Accessories > Air Fuel Delivery > Carburetor Parts

shipping carbcaddie:

  • type: Fixed
  • transit: 5-11 Days
  • class: Standard
  • carrier: UPS
  • cost: $15.99
  • service: UPS Ground

offer carbcaddie:

  • availability: In Stock
  • options: Ship-to-home
  • started: June 21, 2025
  • sold: 0

returns carbcaddie:

  • time: 60 Days
  • paid by: Buyer
  • policy: Returns Accepted

payments carbcaddie:

  • credit card: Diners-club
  • other
  • wallet: Apple-pay
part type: valve carburetor, universal fitment: yes, california prop 65 warning: false,
category: auto parts > car truck parts accessories > air fuel delivery > carburetor parts, sku: 5005561484040631,

Edelbrock 12625 Is Similar To:

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5 offers $22.99–$139.99 USD
  • Offer #1: $23.61 price + free delivery = $23.61* total. Power Valve Style:Standard. Opening Point:2.5 inHg.FREE SHIPPING
  • Offer #2: $139.99 price + free delivery = $139.99* total. Quadrajet Carburetor 1980-89 Chevy GMC Cadillac 305 350 Electric Choke 750 CFM. 400348R91, 401379R91, 404731R91, 405530R91, 405869R94, 535134R91, 535135R91.FREE SHIPPING
  • Offer #3: $22.99 price + $15.99 delivery = $38.98* total. Sold Each. These Edelbrock power valves are for use with Holley carburetors.+$15.99 shipping
  • Offer #4: $25.25 price + free delivery = $25.25* total. Holley performance carburetors built since 1992 have utilized a power valve check system that effectively eliminated this infrequent problem. There still seems to be a lot of misconception about Holley carburetors blowing power valves.FREE SHIPPING
  • Offer #5: $28.76 price + free delivery = $28.76* total. Quantity:Sold As Each.FREE SHIPPING