MCQUAY NORRIS MCQ2004 Exhaust Valve Head 389 8.6 C/r 1.6

( Brand: Mcquay Norris ), ( Manufacturer Part Number: MCQ2004 ), ( Type: Exhaust Valve ), ( Oe/oem Part Number: Mcq2004, 544501 ), ( Material: Steel ), ( Vintage Part: Yes ), ( Country/region Of Manufacture: United States ), ( Finish: Polished )

Review MCQUAY NORRIS Pontiac 389 Exhaust Valve 8.6 C/r 1.6 Head fits 1963–1964

Introducing the McQuay-Norris MQC2004 exhaust valve, an essential component for Pontiac 1963 and 1964 389 cubic inch engines. This valve, with part number MQC2004, is specifically designed for high-performance applications, delivering impressive compression ratios of 8.6:1.

The McQuay-Norris exhaust valve is meticulously crafted from high-quality steel material, ensuring durability and reliability under extreme engine conditions. The valve's head is a 1.6 design, which enhances the engine's ability to breathe efficiently, leading to improved power output and enhanced engine performance.

The MQC2004 exhaust valve boasts a unique and robust construction, featuring a large, reinforced stem that provides excellent strength and resistance to wear and tear. Its exhaust seat is precision-machined to ensure a perfect seal, minimizing exhaust leakage and maximizing engine efficiency.

This exhaust valve is characterized by its large intake and exhaust ports, which facilitate the smooth flow of air and exhaust gases in and out of the engine. This design feature significantly contributes to the engine's ability to deliver optimal power and torque, making it a top choice for hot rod and custom car enthusiasts seeking maximum performance from their classic Pontiac engines.

The McQuay-Norris MQC2004 exhaust valve is a direct fit for Pontiac 1963 and 1964 389 cubic inch engines. Its installation is straightforward, requiring no modification to the engine head or combustion chamber. Simply replace the existing exhaust valve with this high-performance upgrade, and enjoy the noticeable improvement in engine performance.

In summary, the McQuay-Norris MQC2004 exhaust valve is a premium-quality, high-performance upgrade for Pontiac 1963 and 1964 389 cubic inch engines. Its 8.6:1 compression ratio, 1.6 head design, and robust construction make it an excellent choice for those seeking to enhance the power and efficiency of their classic Pontiac engines.

The McQuay-Norris MQC2004 1963-1964 Pontiac 389 exhaust valve with an 8.6:1 compression ratio and 1.6 head is a performance part designed to enhance the engine's power output. Here are some pros and cons of buying this part to help you make an informed decision.

1. Increased power: Replacing your stock exhaust valves with high-performance ones like the McQuay-Norris MQC2004 can help increase the engine's power output, resulting in improved acceleration and overall performance.

2. Improved fuel efficiency: The higher compression ratio of these exhaust valves can help improve the engine's efficiency by allowing it to burn fuel more efficiently.

3. Enhanced durability: McQuay-Norris is a reputable brand known for manufacturing high-quality performance parts. These exhaust valves are designed to last longer than stock valves, providing better value for your money in the long run.

1. Cost: Performance parts like these exhaust valves can be quite expensive, and the cost of installation may also add to the overall expense.

2. Installation complexity: Installing these exhaust valves may require professional assistance from a certified mechanic, which can add to the overall cost and time investment.

3. Compatibility: Ensure that these exhaust valves are compatible with your specific make and model of the Pontiac 389 engine before making a purchase.

The McQuay-Norris MQC2004 1963-1964 Pontiac 389 exhaust valve is a high-performance part that can help increase power, improve fuel efficiency, and enhance durability. However, it comes with a higher cost and installation complexity. If you're looking to maximize the performance of your Pontiac 389 engine and are willing to invest the necessary resources, then these exhaust valves could be an excellent addition.

Before making a purchase, make sure to double-check compatibility with your specific Pontiac 389 engine model and consider the cost and installation complexity. If you're confident in the benefits and can afford the investment, then the McQuay-Norris MQC2004 exhaust valves may be a worthwhile investment for improved engine performance.

Details:

Quantity 1 one exhaust valve. 1964 Pontiac 389 8.6 CR 10.5CR 2BBL/4BBL Exhaust Valve Bonneville Catalina Star Chief Safari. New Old Replacement stock. Stem DOA .3412.

1963 389 8.6CR Exhaust valve. Made in USA by Mcquay Norris.

part #: mcq2004 price

• $18.00

specifications voomvalve:

• for makes: Pontiac
• for years: 1963-1964
• brand: Mcquay Norris
• mpn: Mcq2004
• type: Exhaust Valve
• oe/oem part number: Mcq2004, 544501
• material: Steel
• vintage part: Yes
• country/region of manufacture: United States
• finish: Polished

seller voomvalve:

• rating: 99.7%
• # reviews: 16142
• city: Vinton, Virginia

general voomvalve:

• Engines Engine Parts > Valvetrain Components > Valves
• condition: New

offer voomvalve:

• quantity: 6
• options: Ship-to-home
• started: August 1, 2025
• sold: 0
• availability: In Stock

payments voomvalve:

• other
• credit card: Diners-club
• wallet: Paypal

shipping voomvalve:

• transit: 4-8 Days
• type: Fixed
• service: Expedited
• class: Expedited
• cost: $0.00

returns voomvalve:

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

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