GM 9778752 Nos Set Intake Valves 546396 General 389 8.6

( Brand: Gm ), ( Manufacturer Part Number: 9778752 ), ( Country Of Origin: United States ), ( Type: Intake Valve ), ( Ipn: 546396 ), ( Material: Steel ), ( Vintage Part: Yes )

Review GM General Motors Nos Set Pontiac 389 8.6 Intake Valves fits LEMANS FIREBIRD GTO 400 1965–1967

Introducing the 9778752 NOS (New Old Stock) intake valves for the 1965-1967 Pontiac GTO, LeMans, Firebird models with the 389 and 400 cubic inch engines. These valves are an essential upgrade for enthusiasts seeking to enhance the performance of their classic Pontiac vehicles.

Manufactured to original specifications, these intake valves are crafted from high-quality steel with a precise diameter of approximately 1.98 inches. The valve stems are designed with a standard length of 1.5 inches, enabling a smooth fit into the engine cylinder head. Each valve features a unique, rounded shape at the intake tip, which facilitates efficient airflow and optimal engine performance.

These NOS intake valves have undergone rigorous inspection and testing to ensure they meet the highest standards for authenticity and functionality. The valves display minimal to no signs of wear or corrosion, retaining their original luster and structure. The valves come as a set of four, ensuring a perfect match for your Pontiac engine.

Installing these NOS intake valves in your classic Pontiac engine can lead to numerous benefits, such as improved engine response, increased horsepower, and enhanced overall performance. These valves are an excellent investment for those looking to restore their vintage Pontiac to its former glory or for those seeking to maximize the potential of their high-performance engine.

In conclusion, the 9778752 NOS set of intake valves for the 1965-1967 Pontiac GTO, LeMans, and Firebird models with the 389 and 400 cubic inch engines is an essential upgrade for those seeking to restore their classic Pontiac to its original glory or to maximize the potential of their high-performance engine. These valves are crafted from high-quality steel, retain their original structure and luster, and have undergone rigorous inspection and testing to ensure authenticity and functionality. By installing these NOS intake valves, you can experience improved engine response, increased horsepower, and enhanced overall performance.

1. Performance Improvement: Larger intake valves allow more air to enter the engine, which can lead to increased power and torque output.

2. Durability: 8.6 intake valves are often made of stronger materials than stock intake valves, making them more durable and resistant to wear and tear.

3. Customization: Upgrading to larger intake valves is a popular modification among hot rod and muscle car enthusiasts, and can add value to the vehicle.

1. Cost: 8.6 intake valves can be expensive, especially when purchased as part of a complete intake manifold setup.

2. Installation Complexity: Installing larger intake valves requires some mechanical skill and experience, and may involve additional modifications to the engine or intake manifold.

3. Compatibility: Not all engines or intake manifolds are compatible with 8.6 intake valves, so it's important to verify compatibility before making a purchase.

In conclusion, buying 8.6 intake valves for a 1965-1967 Pontiac 389 400 GTO Lemans Firebird can offer significant performance improvements and increased durability, but it comes with a higher cost, installation complexity, and potential compatibility issues.

If you're serious about upgrading your engine and are willing to invest the time and resources into the project, then purchasing 8.6 intake valves could be a worthwhile investment. However, if you're looking for a simple and cost-effective modification, there may be other options to consider. Ultimately, the decision should be based on your budget, mechanical skills, and goals for your vehicle.

Details:

1965-1967 Pontiac All 389 400 Intake with 2 Barrel carb. NOS Set 8 GM 1965-1967 Pontiac 389 400 GTO LeMans Firebird 8.6 C/R Intake Valves. Original New Old Stock. 1967 Pontiac GTO 400 Intake with 2 Barrel carb.

1965-1966 Pontiac Bonneville, Catalina, Star Chief 389 Intake with 2 Barrel carb.

part #: 9778752 prices

• $169.50-$234.56

specifications voomvalve:

• for models: Gto, 400, Lemans, Firebird
• for makes: Pontiac
• for years: 1965-1967
• brand: Gm
• mpn: 9778752
• country of origin: United States
• type: Intake Valve
• ipn: 546396
• material: Steel
• vintage part: Yes

offer voomvalve:

• best offers: True
• started: May 17, 2026
• availability: In Stock
• sold: 0
• options: Ship-to-home
• quantity: 1

seller voomvalve:

• city: Decatur, Georgia
• rating: 100.0%
• # reviews: 3500

general voomvalve:

• Engines Engine Parts > Valvetrain Components > Valves
• condition: New other see details

shipping voomvalve:

• service: USPS Ground Advantage
• class: Standard
• carrier: USPS
• type: Fixed
• cost: $11.95
• transit: 4-9 Days

returns voomvalve:

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

payments voomvalve:

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

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