fits model: H-2.

( Brand: Precision ), ( Manufacturer Part Number: CH-628 ), ( Part Type: Carburetor ), ( Ipn: 4006658; R7752a )
The Precision CH-628 Carburetor from Holley is a high-performance upgrade for your engine, specifically designed for applications requiring enhanced fuel delivery and efficiency. This carburetor is part of Holley's 2254 series, which is renowned for its reliability and performance in a wide range of automotive applications.
The CH-628 carburetor features a 650 CFM (cubic feet per minute) airflow rating, making it suitable for engines with moderate to high horsepower requirements. It is equipped with a 750 cfm secondary venturi, providing ample fuel delivery for improved engine performance. The carburetor's primary venturi is 2-barrel in design, ensuring smooth and consistent fuel delivery at all throttle positions.
One of the standout features of this carburetor is its electric choke mechanism, the H-2, which is activated by a switch on the dash. This feature eliminates the need for a manual choke, providing quick and reliable cold start performance in various weather conditions. The choke system is controlled by a relay, which is included in the kit, making installation straightforward and hassle-free.
The R-7752A vacuum secondaries on the CH-628 carburetor are manually controlled and can be adjusted to fine-tune the engine's performance. These vacuum secondaries provide additional fuel delivery when needed, such as during acceleration or under high load conditions. The secondary throttle plates are operated by a vacuum diaphragm, which is connected to the engine's intake manifold.
The carburetor is constructed from high-quality materials, including a cast aluminum base and a billet aluminum float bowl. This not only enhances its durability but also contributes to its attractive appearance. The CH-628 carburetor also features a 1.5-inch chrome-plated throttle shaft and linkage, ensuring smooth operation and a long service life.
In summary, the Precision CH-628 Carburetor from Holley is a powerful and reliable fuel delivery solution for your engine. Its 650 CFM airflow rating, electric choke mechanism, and adjustable vacuum secondary throttles make it an excellent choice for high-performance applications. The carburetor's high-quality construction ensures durability and reliability, while its attractive appearance adds a touch of style to your engine bay.
Pros of buying a Holley 2254 H-2 R-7752A CH-628 Precision Carburetor:1. High Quality: Holley is a well-known brand in the automotive industry, known for producing high-quality carburetors. This product is no exception, offering precision and reliability.
2. Adjustability: The CH-628 carburetor has several adjustable features, allowing you to fine-tune your engine's performance for optimal fuel efficiency and power output.
3. Suitable for Various Applications: This carburetor is suitable for a wide range of applications, including street rods, muscle cars, and hot rods.
4. Easy Installation: Holley carburetors are generally easy to install, and the CH-628 is no exception. The instructions are clear, and the parts are well-labeled.
5. Durability: Holley carburetors are built to last. The CH-628 is made from high-quality materials and is designed to withstand the rigors of regular use.
Cons of buying a Holley 2254 H-2 R-7752A CH-628 Precision Carburetor:1. Expensive: Compared to some other carburetors on the market, the CH-628 is quite expensive. This may be a deterrent for some budget-conscious buyers.
2. Complexity: While the CH-628 is adjustable, this also means it can be more complex to set up and tune than some simpler carburetors. This may require more time and expertise.
3. Potential for Leaks: Carburetors, in general, can be prone to leaks. The CH-628 is no exception. Regular maintenance and careful installation can help reduce the risk of leaks, but they are still a possibility.
Conclusion:The Holley 2254 H-2 R-7752A CH-628 Precision Carburetor is a high-quality, adjustable carburetor suitable for a wide range of applications. While it is more expensive than some other options and can be more complex to set up, its durability and precision make it a worthwhile investment for many car enthusiasts.
Recommendation:If you're looking for a high-quality, adjustable carburetor and you're willing to invest in a more expensive option, the Holley 2254 H-2 R-7752A CH-628 Precision Carburetor is a great choice. However, if you're on a tight budget or prefer a simpler carburetor, there may be other options that better suit your needs. It's always a good idea to do your research and consider your specific needs and budget before making a purchase.
Shipping:: Free Shipping is for continental USA only. They may have been in storage anywhere from 1-30 years. None of which makes the part Defective.
Sometimes the fitment is so old that it does not take into account trim, engine size or build dates. Rubber parts, gaskets, hardware may need to be replaced and not usable. Or any other minor issue that does not make the part you are buying DEFECTIVE. Precision part number CH-628.
If any manufacturer warranty exists, it is between you and them. ONCE Purchased YOU OWN IT. Be sure the part you are buying is correct for your application. OLDER REMAN CARBURETOR> May need to be refitted before using.
There may be minor corrosion, scuffs, torn or missing boxes, scratches from storage, etc.