GM 497610 Nos Port Distributor Vacuum Advance Modulator General Valve

( Brand: Gm ), ( Manufacturer Part Number: 497610 ), ( Color: Black ), ( Material: Plastic ), ( Vintage Part: Yes ), ( California Prop 65 Warning: Most Likely ), ( Type: Vacuum Advance ), ( Country Of Origin: United States ), ( Performance Part: No )

Review GM General Motors Nos Pontiac Port Distributor Vacuum Advance Modulator Valve fits 455 1976

Introducing the 1976 Pontiac 455 GM 497610 NOS (New Old Stock) Port Distributor Vacuum Advance Modulator Valve, a crucial component for restoring or maintaining the performance of your classic Pontiac 455 engine. This vintage automotive part is a must-have for enthusiasts seeking to preserve the authenticity and originality of their cherished muscle cars.

Measuring approximately 3 inches (7.6 cm) in length, 1.5 inches (3.8 cm) in width, and 1 inch (2.5 cm) in height, this modulator valve is a compact yet pivotal piece of your ignition system. It is designed to regulate the vacuum advance of your distributor based on engine RPM, thereby ensuring optimal engine performance and fuel economy.

The 497610 NOS Port Distributor Vacuum Advance Modulator Valve from GM boasts an all-steel construction, ensuring durability and reliability. Its smooth, polished finish not only enhances the aesthetic appeal of your engine but also protects the valve from corrosion and wear.

This vintage part is a direct fit for 1976 Pontiac engines equipped with the 455 cubic inch V8 engine and the 4-barrel carburetor setup. It comes with a vacuum hose connection on one end and a distributor connection on the other, allowing for straightforward installation.

By installing this authentic 1976 Pontiac 497610 NOS Port Distributor Vacuum Advance Modulator Valve, you can restore the original functionality and character of your classic muscle car. This part is a testament to the rich history and engineering prowess of Pontiac and the muscle car era.

In conclusion, the 1976 Pontiac 455 GM 497610 NOS Port Distributor Vacuum Advance Modulator Valve is a vital component for enthusiasts seeking to preserve or enhance their classic Pontiac engine. Its all-steel construction, direct fitment, and straightforward installation make it a popular choice for muscle car restoration projects. Replace or upgrade your current modulator valve with this authentic piece and experience the rich history, character, and performance of your 1976 Pontiac engine.

The GM 1976 Pontiac 455 port distributor vacuum advance modulator valve is an essential component of the ignition system in older Pontiac vehicles with the 455 cubic inch engine. Here are some pros and cons that may help you decide whether to buy this part:

1. Improved Engine Performance: This part is crucial for proper engine performance as it regulates the vacuum advance, which in turn helps to improve the engine's power and fuel efficiency.

2. OEM Part: This is a genuine OEM (Original Equipment Manufacturer) part, which means it is specifically designed and manufactured by General Motors to fit and function optimally in your Pontiac 455 engine.

3. Long-Lasting: This part is known for its durability and reliability, and it may last longer than aftermarket alternatives.

4. Enhanced Drivability: A faulty vacuum advance modulator valve can cause rough idling, stalling, and poor acceleration. Replacing this part can help improve the drivability of your vehicle.

1. Cost: OEM parts can be more expensive than aftermarket alternatives. The price of this part may vary depending on the supplier and availability.

2. Availability: GM parts may not be readily available in all areas, especially for older models like the 1976 Pontiac. You may need to check with multiple suppliers or wait for the part to be shipped from a distance.

3. Installation: Installing this part may require some mechanical knowledge or professional assistance, which could add to the overall cost.

The GM 1976 Pontiac 455 port distributor vacuum advance modulator valve is an essential component for the proper functioning of your engine. While the cost may be a concern, the benefits of using a genuine OEM part, such as improved performance, long-lasting reliability, and enhanced drivability, can outweigh the initial investment. If you are experiencing issues with your engine's performance, it may be worth considering the replacement of this part.

If you are considering buying this part, it is recommended that you purchase it from a reputable supplier or dealership to ensure authenticity and quality. Additionally, it is essential to ensure that you have the necessary tools and knowledge to install the part yourself or plan to pay for professional installation to avoid any potential complications.

Details:

I will send other pics if requested. I am not an expert so may be wrong. They are a large part of the. This is an NOS GM #497610 distributor vacuum advance modulator valve in its original box.

The box is fair. Keep your eyes open for more NOS parts. I recently purchased a large lot of NOS GM parts. Its in like new condition.

According to my online research it would be correct for all 1976 Pontiac model's with a 455 V8 and Federal emissions. Look the pictures over good and ask questions. I do combine shipping when possible. I ship US mail or FedEx, whichever is less.

I describe items to the best of my ability. It would be perfect for a nice driver, survivor, or restoration project. Please zoom in on all 11 photos to get a better look at what you are buying.

It may fit other years and or GM model's. See 11 photos.

part #: 497610 prices

• $52.41-$75.99

specifications disripa:

• for models: 455
• for makes: Pontiac
• for years: 1976
• brand: Gm
• mpn: 497610
• color: Black
• material: Plastic
• vintage part: Yes
• california prop 65 warning: Most Likely
• type: Vacuum Advance
• country of origin: United States
• performance part: No

returns disripa:

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

general disripa:

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

payments disripa:

• credit card: Discover
• other
• wallet: Paypal

seller disripa:

• # reviews: 10048
• city: Voorheesville, New York
• rating: 100.0%

shipping disripa:

• carrier: USPS, FedEx, UPS
• class: Standard, Economy, Expedited
• cost: $11.00
• service: USPS Ground Advantage, FedEx Ground Economy, UPS Ground Saver, USPS Priority Mail
• transit: 4-9 Days
• type: Calculated

offer disripa:

• availability: In Stock
• options: Ship-to-home
• sold: 0
• started: January 3, 2026
• quantity: 1

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