TOP STREET PERFORMANCE JM6504BL Distributor 810643010768 For V8 326 389 421 7.0L 7.5L455

( Brand: Top Street Performance ), ( Manufacturer Part Number: JM6504BL ), ( Color: Blue ), ( Part Type: Distributor ), ( UPC: 810643010768 )

Review TOP STREET PERFORMANCE Hei Distributor Pontiac V8 301 326 389 421 7.0l 7.5l455 Blue fits 350 400 428

Introducing the Top Street Performance JM6504BL Distributor, a high-performance solution engineered specifically for Pontiac V8 engines with displacements ranging from 301 to 7.5L, including models with 326, 350, 389, 400, 421, and 428 cubic inches, as well as 7.0L and 455-powered variants. This distributor is not to be confused with OEM counterparts; it's designed to deliver enhanced reliability, improved performance, and a more responsive driving experience.

The JM6504BL Distributor is characterized by its robust design, featuring a heavy-duty, high-torque, 12-degree mechanical advance distributor housing. This design allows for efficient spark delivery, ensuring optimal combustion in each cylinder. The housing is also crafted from high-strength materials, providing superior durability and resistance to common failures often associated with factory distributors.

At the heart of this performance distributor is a new and improved, high-energy, 5.5mm spark plug terminal. This terminal delivers a stronger, more consistent spark, which translates to better combustion and increased power output. Additionally, the terminal is designed to accommodate a wide range of aftermarket spark plugs, offering flexibility for users seeking to further enhance their engine performance.

Another notable feature of the Top Street Performance JM6504BL Distributor is its innovative vacuum advance system. This system improves low-end torque and power by optimizing ignition timing during light throttle conditions. Furthermore, the distributor's advanced centrifugal advance mechanism provides precise ignition timing at higher engine speeds for superior power delivery and improved overall engine performance.

The JM6504BL Distributor is also equipped with a precision-machined, heavy-duty cam and a durable, high-tension distributor drive, ensuring precise and reliable operation. Additionally, the distributor comes with an integrated vacuum advance valve, making installation a breeze and eliminating the need for a separate vacuum advance unit.

Lastly, this performance distributor features a high-visibility, easy-to-read timing mark, allowing for quick and accurate initial timing setup. The JM6504BL Distributor is an excellent choice for enthusiasts seeking improved reliability, enhanced power output, and a more responsive driving experience from their Pontiac V8 engine.

Buying a Top Street Performance JM6504BL Distributor for Pontiac V8 Engines: A Comprehensive Analysis

The Top Street Performance JM6504BL distributor is a popular aftermarket option for Pontiac V8 engines, including 301, 326, 350, 389, 400, 421, 7.0l, 428, and 7.5l. This distributor offers several advantages over the stock distributor, but it also comes with certain considerations. This analysis will provide a detailed examination of the pros and cons of purchasing a Top Street Performance JM6504BL distributor for Pontiac V8 engines, followed by an Recommendation.

1. Improved Performance: The Top Street Performance JM6504BL distributor features a more efficient design, which can lead to improved engine performance. The distributor's advanced vacuum secondary reduces voltage loss and provides a stronger spark, which is particularly beneficial for high-performance applications.

2. Durability: The JM6504BL distributor is constructed from high-quality materials, such as billet aluminum and hardened steel. This ensures that the distributor can withstand the rigors of high-performance driving and resist wear and tear, making it a reliable investment.

3. Adjustability: The distributor offers a degree of adjustability, allowing users to fine-tune the ignition timing for their specific engine configuration. This can lead to better fuel economy and increased power.

4. Improved Fit and Finish: The JM6504BL distributor is designed to provide a better fit and finish than the stock distributor. It features a polished aluminum cap and a high-quality vinyl boot, which not only look better but also protect the distributor from the elements.

1. Cost: The Top Street Performance JM6504BL distributor is more expensive than the stock distributor. While the performance and durability benefits may justify the investment for some, others may find the cost to be a deterrent.

2. Complex Installation: Installing the JM6504BL distributor can be a complex process, requiring specialized tools and knowledge. This may make the installation process more time-consuming and expensive than some users anticipate.

3. Compatibility: The JM6504BL distributor may not be compatible with all Pontiac V8 engines. Users should ensure that their engine is compatible before making a purchase to avoid any potential compatibility issues.

The Top Street Performance JM6504BL distributor offers several advantages over the stock distributor, including improved performance, durability, adjustability, and fit and finish. However, it also comes with certain considerations, such as a complex installation process, compatibility issues, and a higher cost. Ultimately, the decision to purchase the JM6504BL distributor depends on the user's specific needs and priorities.

For those seeking improved performance and durability for their Pontiac V8 engine, the Top Street Performance JM6504BL distributor is an excellent investment. However, users should carefully consider the installation process, compatibility, and cost before making a purchase. Those who are unsure about the installation process or engine compatibility should consult with a professional mechanic to ensure a successful installation and optimal engine performance.

Details:

Our team is committed to resolving any issues as quickly possible. HEI Distributor for Pontiac V8 301 326 350 389 400 421 7.0L 428 7.5L455 - Blue: Deliver dependable ignition Performance with a distributor engineered consistent spark delivery and stable timing control in Street-driven applications. 7.0 L / 428 in. Items must be in their original condition and include all packaging accessories.

COMMON VEHICLE APPLICATIONS, Pontiac GTO, Fire bird, Leans, Tempest, Grand Pix, Catalina, Bonneville. Designed for Street-driven and Performance-oriented applications, this distributor supports dependable ignition operation improved engine response. Boxes, APO/FPO addresses if applicable. NOTES, Distributor gear is most compatible with cast iron hydraulic or solid flat tappet camshafts; consult cam manufacturer for recommended material.

Designed to support reliable startup Performance, improved throttle response, and dependable high-RPM ignition stability. The machined housing, precision shaft support, and Performance ignition components help maintain accurate timing reliable spark delivery across the RPM range. Every TSP product is backed by a one-year warranty, ensuring reliability and customer confidence. 6.9 L / 421 in.

SPECIFICATIONS, Distributor Type: HEI, Advance Mechanical and Vacuum Advance, voltage Requirement: 12 Volt, Tachometer Compatible: Yes.

part #: jm6504bl price

• $97.22

specifications disripa:

• for models: 350, 400, 428
• for makes: Pontiac
• brand: Top Street Performance
• mpn: Jm6504bl
• color: Blue
• part type: Distributor
• upc: 810643010768

payments disripa:

• other
• wallet: Google-pay
• credit card: Discover

offer disripa:

• sold: 0
• options: Ship-to-home
• availability: In Stock
• started: May 15, 2026

returns disripa:

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

general disripa:

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

seller disripa:

• # reviews: 4786
• city: Santa Fe Springs, California
• rating: 100.0%

shipping disripa:

• class: Standard
• transit: 5-13 Days
• type: Calculated
• service: UPS Ground
• carrier: UPS
• cost: $22.79

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