556-170 HOLLEY Crank Trigger Hall Effect Kit

Review HOLLEY Fits 8in Crank Trigger Kit Bbc Hall Effect

The Holley 556-170 8-inch 12-1x Crank Trigger Kit for BBC (Big Block Chevrolet) applications is a high-performance ignition solution designed for enthusiasts seeking reliable and precise ignition system control for their classic or modern muscle car.

This trigger kit features a robust 8-inch diameter design, which provides increased durability and stability compared to traditional 6-inch or smaller trigger wheel setups. The Holley 556-170 is engineered to work seamlessly with Hall Effect distributors, ensuring precise and consistent ignition timing.

The Holley 556-170 Crank Trigger Kit is suitable for Big Block Chevrolet engines, including those with up to 12 cylinders, and those requiring a 1x trigger output. This versatility makes it an excellent choice for a wide range of applications, from street rods to high-performance race cars.

The kit includes a high-quality, anodized aluminum trigger wheel that measures 8 inches in diameter and is designed to resist wear and corrosion. The trigger wheel is also compatible with various Holley distributors, such as the Holley 0-360 degree distributor and the Holley 110-degree distributor.

The Holley 556-170 Crank Trigger Kit is designed to provide easy installation, with included hardware and clear instructions to guide users through the process. The kit comes complete with all necessary components, including a trigger wheel, trigger wheel bolts, and an adjustable trigger arm.

The trigger arm is adjustable, allowing users to fine-tune their ignition timing for optimal engine performance. The kit's Hall Effect technology ensures accurate and consistent triggering, resulting in improved engine performance and reliability.

In summary, the Holley 556-170 8-inch 12-1x Crank Trigger Kit for BBC is a high-quality, durable, and versatile ignition solution designed for Big Block Chevrolet engines. With its 8-inch trigger wheel, Hall Effect technology, and adjustable trigger arm, this kit provides precise ignition control and easy installation, making it an excellent choice for both street and race applications.

The Holley 556-170 8-inch 12-1x crank trigger kit for BBC (Big Block Chevrolet) applications is a popular choice among performance enthusiasts for its ability to provide reliable and accurate ignition system control. Here are some pros and cons of purchasing this kit:

1. High-quality construction: Holley is a well-known brand in the automotive performance industry, and this trigger kit is no exception. It is built to last with heavy-duty materials and precise machining.

2. Versatile application: This trigger kit is compatible with a wide range of BBC engines and can be used with various ignition systems, including distributor-less systems.

3. Improved engine performance: By providing accurate and reliable ignition system control, this trigger kit can help improve engine performance, increase power output, and enhance overall driving experience.

4. Easy installation: The trigger kit comes with clear instructions and all necessary hardware for installation, making it a relatively easy project for experienced DIYers or professional mechanics.

1. Expensive: Compared to some other trigger kit options on the market, the Holley 556-170 can be quite pricey. However, its high-quality construction and versatile application make it a worthwhile investment for serious performance enthusiasts.

2. Requires some advanced knowledge: While the installation process is relatively straightforward, some users may find that setting up the trigger kit and calibrating the ignition system requires a certain level of expertise.

3. May require additional components: Depending on the specific application, users may need to purchase additional components, such as a hall effect sensor or a distributor, to complete the installation.

In conclusion, the Holley 556-170 8-inch 12-1x crank trigger kit for BBC applications is a high-quality and versatile option for those looking to upgrade their ignition system for improved engine performance. While it may be expensive and require some level of expertise to install, its reliable and accurate performance makes it a worthwhile investment for serious performance enthusiasts.

If you are in the market for a high-performance ignition system for your BBC engine and are willing to invest in a reliable and accurate trigger kit, then the Holley 556-170 8-inch 12-1x crank trigger kit is a great choice. However, if you are on a budget or are not confident in your ability to install and calibrate the trigger kit, then you may want to consider other, more affordable options. Ultimately, the decision comes down to your specific needs, budget, and level of expertise.

Details:

Crank trigger kit - flying magnet hall effect sensor wheel / pickup bracket hardware 8 in balance big block Chevy.

specifications ignitioncomp:

• brand: Holley
• mpn: 556-170
• part type: Crank
• air restricted: No
• upc: 090127470640

offer ignitioncomp:

• availability: in stock
• sold #: 11
• price: $649.95
• item condition: New
• started: december 16, 2025
• in stock #: 5
• options: ship-to-home

general ignitioncomp:

• category: Auto Parts > Car Truck Accessories > Ignition Systems Components

seller ignitioncomp:

• city: frisco
• # reviews: 1080
• rating: 99.3%

shipping ignitioncomp:

• service: ups ground
• type: fixed
• carrier: ups
• transit: 3-7 days
• class: standard

payments ignitioncomp:

• credit card: diners-club
• other
• wallet: paypal

returns ignitioncomp:

• time: 30 days
• paid by: seller
• policy: returns accepted