DUCOIL D31CB Dual Point Distributor Big Block

( Brand: Ducoil ), ( Manufacturer Part Number: D31CB ), ( Type: Distributor ), ( Oe/oem Part Number: 1110891 ), ( Color: Black ), ( Material: Metal ), ( Vintage Part: Yes ), ( Country Of Origin: United States )

Review DUCOIL Vintage Wdual Point Distributor Small And Big Block Chevy Sbc Bbc

The Ducoil D31CB Dual Point Distributor is a high-performance component designed specifically for Big Block Chevy BB (Bore Bridge) engines. This distributor is engineered to deliver precise and reliable ignition system performance for optimal engine operation.

The D31CB distributor features a robust dual point design, which utilizes two rotors to provide multiple spark events per cylinder cycle. This design helps ensure that each cylinder receives a spark at the ideal moment for maximum power and efficiency. The distributor also includes a heavy-duty centrifugal advance mechanism, which automatically adjusts the timing advance based on engine speed for improved power and fuel economy.

The distributor housing is made from high-quality aluminum, and it is designed to fit securely onto the engine using the factory mounting points. The cap and rotor are made from a durable, heat-resistant material, and they are designed to provide long-lasting performance even in the most demanding conditions. The distributor also includes a high-tension, gold-plated distributor point and condenser, which ensure reliable and consistent spark output.

The D31CB distributor is compatible with most popular Big Block Chevy BB engines, including those used in classic muscle cars, hot rods, and high-performance applications. It also comes with a detailed installation guide and all necessary hardware for a straightforward installation process.

Overall, the Ducoil D31CB Dual Point Distributor is an excellent choice for anyone looking to upgrade the ignition system on their Big Block Chevy BB engine. Its robust design, precision engineering, and long-lasting materials ensure reliable and consistent performance, making it an essential component for any high-performance application.

The Ducoil D31CB Dual Point distributor is a popular choice for big block Chevy BB (Bigger Block) engines. This distributor offers several advantages and disadvantages, which are discussed below.

1. Improved Engine Performance: The Ducoil D31CB distributor is designed to provide better ignition timing and distribution, leading to improved engine performance. It is suitable for high-performance applications.

2. Durability: This distributor is known for its durability. It is made of high-quality materials, including a heavy-duty housing and hardened steel shaft, which makes it resistant to wear and tear.

3. Easy Installation: The Ducoil D31CB distributor is relatively easy to install. It comes with pre-set ignition timing, which saves time and effort during installation.

4. Suitability for Big Block Chevy Engines: This distributor is specifically designed for big block Chevy BB engines. It is a direct replacement for the original distributor, making it a convenient and cost-effective option for Chevy owners.

1. Expensive: The Ducoil D31CB distributor is more expensive than some other distributors on the market. Its high-quality materials and improved performance features come at a premium price.

2. Limited Compatibility: This distributor is only suitable for big block Chevy BB engines. It cannot be used on other types of engines.

3. Complex Design: The Ducoil D31CB distributor has a complex design, which may require some knowledge of engine systems to install and maintain.

The Ducoil D31CB Dual Point distributor is a high-performance and durable option for big block Chevy BB engines. Its advantages, such as improved engine performance and easy installation, outweigh its disadvantages, such as its expensive price tag and limited compatibility. If you are a Chevy owner looking for a reliable and effective distributor for your big block engine, the Ducoil D31CB distributor is worth considering.

If you are a Chevy BB engine owner in search of a high-performance and durable distributor, the Ducoil D31CB distributor is an excellent choice. Its improved ignition timing and distribution, combined with its durability and easy installation, make it a worthwhile investment for those seeking optimal engine performance. However, keep in mind that its premium price may not be suitable for all budgets. If cost is a concern, consider exploring other distributor options that may offer similar performance at a lower price point.

Details:

This requires a special cap and rotor as shown. This distributor just came out of a parts collection that had been in cool dry storage since the early 70's. Shipping: The Domestic shipping cost shown is for the Continental US. The inside of the cap has a chip on edge that may have been there as part production from new, This is simply very nice vintage true high performance.

This distributor is in good un restored condition as shown. The part number is D31CB. It is complete with the cap and rotor. It spins smoothly with no binding or sloppiness.

This would be great for a vintage period correct hot rod, race car, etc. The cap and rotor are very nice. This is a vintage Ducoil dual point distributor that fits small and big block Chevy engines. This distributor was the choice of many hot rudders and racers due to its rugged high performance oriented design.

part #: d31cb prices

• $75.50-$499.99

specifications disripa:

• for makes: Chevy
• brand: Ducoil
• mpn: D31cb
• type: Distributor
• oe/oem part number: 1110891
• color: Black
• material: Metal
• vintage part: Yes
• country of origin: United States

payments disripa:

• wallet: Apple-pay
• cash
• credit card: Mastercard
• money order
• other

shipping disripa:

• class: Standard
• type: Fixed
• transit: 4-9 Days
• cost: $23.85
• service: Standard

general disripa:

• condition: Used
• Car Truck Parts Accessories > Ignition Systems Components > Distributors

seller disripa:

• # reviews: 17616
• city: Santa Cruz, California
• rating: 99.8%

offer disripa:

• started: April 4, 2026
• sold: 0
• options: Ship-to-home
• best offers: True
• availability: In Stock
• quantity: 1

returns disripa:

• time: 30 Days
• paid by: Seller
• policy: Returns Accepted

Ducoil D31CB Is Similar To:

• D31c Chevrolet Ducoil Distributor (31.6% similar) I have never run it so dont know anything more than that. Old school Ducoil distributor. This unit is in used and unknown condition. Cap is brand new. Unit itself looks to have been run for a short period, but is in great shape, can hardly tell on the gear. Ill be happy to answer any questions I can...(November 4th, 2018)
• Ducoil D21c Rare 1950s W h Dual Point Distributor Cadillac (64.7% similar) Please look closely at photos. A very early distributor by Ducoil, for Cadillac 331 1949-53. Some minor cosmetic damage, a chip below the cap, and small ding on actual cap. Rare 1950S Ducoil dual point D21C performance distributor. I have not tested this distributor, and do guarantee functionality...(April 22nd, 2024)
• W h H140b W h Ducoil Vintage Distributor (43% similar) Vintage Ducoil distributor; H140B...(August 21st, 2024)
• Ducoil D44dr Nos New Distributor Olds 455 Oldsmobile 425 Hot Rat Rod (41.6% similar) The cap has a chip, and will need repair or replacing. This is a new, never used Ducoil distributor D44DR for vintage 455 Oldsmobile will fit other displacements of the same vintage 425, 350, etc...(March 10th, 2025)
• W h Ducoil D31d Dual Rotor Performance Distributor For Chevy Sbc Bbc 8 Cylinder (57.5% similar) I have no way of testing it to know if works. The research l did states, that's it can used in big or small block chevy comes just as you see it. I bought this a flea market is being sold as an untested unit...(June 2nd, 2025)
• W h Ducoil D51cb Dual Points Performance Distributor (51.1% similar) Appears to be in excellent condition. I listed the model number - I'm not sure which engines it fits...(September 13th, 2025)
• W h Ducoil D41d Vintage W h Distributor 1949 To 1958 Oldsmobile 303 324 371 Dual Points (46.4% similar) The bottom of the rotor is broken off. Shipping combined when possible. Please see photos as they are part of the. Vintage Ducoil 72 distributor for all model's of 1949 to 1958 Oldsmobile engines including 303 324 and 371 Ci. Soup up your rocket with a period correct vintage speed performance part...(September 25th, 2025)
• W H Ducoil A11c And Distributor 331 354 Hemi (42.5% similar) Its very dirty as it has been on a shelf for lot of years. This would Be's very interesting part for a street rod. This is a used Ducoil dual coil distributor that will fit any 331 or 354 Chrysler hem. Not many around!!the unit is complete as can be seen in the photos...(November 1st, 2025)
• W h H130b Ford Y Block 292-312 W h Ducoil Distributor Dual Coil And Point Hot Rod (45.1% similar) It was saved from a hot prodded 1956 truck that torn down for body work and never put back together. This dual point - coil distributor was pulled from a y block 292-312 some time ago I thought would use it but never did. Please verify it will fit your application prior to purchasing. This is ...(March 28th, 2026)