GM 3964291 Cylinder Heads Winters Intake Valve Covers

( Brand: Gm ), ( Manufacturer Part Number: 3964291 ), ( Color: Silver ), ( Items Included: Oil Filler Cap ), ( Material: Iron Aluminum ), ( Vintage Part: Yes ), ( Type: Cylinder Heads Intake Manifold Valve Covers ), ( Finish: Unfinished ), ( Country Of Origin: United States )

Review GM Chevrolet Cylinder Heads Winters Intake Valve Covers fits LS6 454 1970

Introducing the GM 3964291 Intake Manifold and Winters Intake Valve Covers for the 1970 Chevrolet LS6 454 CID engine. These components are essential upgrades for any enthusiast looking to enhance the performance and aesthetic appeal of their classic muscle car.

The GM intake manifold, part number 3964291, is a factory replacement designed to provide optimal airflow and fuel distribution to your engine. This manifold is specifically engineered for the LS6 454 CID engine, ensuring a perfect fit and seamless integration with your existing engine components. Its robust design is built to withstand the demands of high-performance applications, making it an excellent choice for those seeking to maximize the potential of their classic Chevrolet.

Accompanying the intake manifold are the Winters Intake Valve Covers, part number not provided. These covers not only protect the intake valves from external elements but also add an eye-catching touch to your engine bay. Manufactured by Winters Performance Products, these covers are known for their durability and high-quality finish. The Winters intake valve covers are made from heavy-duty aluminum, providing excellent heat dissipation and resistance to corrosion. Their sleek, polished appearance complements the overall look of your engine and adds a touch of sophistication to your classic Chevrolet.

The installation of these components is relatively straightforward and can be accomplished with basic hand tools. However, it is strongly recommended that you consult your vehicle's service manual or a professional mechanic to ensure a proper installation and to avoid any potential damage to your engine.

In summary, the GM 3964291 Intake Manifold and Winters Intake Valve Covers are must-have upgrades for any 1970 Chevrolet LS6 454 CID engine enthusiast. These components not only enhance the performance of your engine but also add a touch of style and sophistication to your classic muscle car. With their robust designs and high-quality materials, these parts are built to last and are sure to provide years of enjoyment for muscle car enthusiasts.

Buying GM 3964291 1970 Chevrolet LS6 454 cylinder heads with Winter's intake valve covers can be a significant investment for any Chevrolet enthusiast or restorer. Here are some pros and cons to consider before making a purchase.

1. Authenticity: These cylinder heads and intake valve covers are original parts from the 1970 Chevrolet LS6 454 engine, which is highly desirable among collectors and enthusiasts.

2. Performance: The LS6 engine is known for its high-performance capabilities, and these original parts can help maximize the engine's potential.

3. Rarity: Finding original LS6 cylinder heads and intake valve covers in good condition is becoming increasingly rare, making them valuable collectibles.

1. Cost: Original parts like these can be expensive, especially if they are in good condition or hard to find.

2. Availability: These parts may be difficult to find in some areas, requiring a significant search or contacting various suppliers or collectors.

3. Condition: Original parts may not be in perfect condition, which could require additional restoration work and costs.

Buying GM 3964291 1970 Chevrolet LS6 454 cylinder heads with Winter's intake valve covers can be a worthwhile investment for collectors, enthusiasts, or restorers. However, it's essential to consider the cost, availability, and potential condition of the parts before making a purchase. If the parts are in good condition and can be acquired at a reasonable price, they can significantly enhance the value and performance of a 1970 Chevrolet LS6 454 engine.

If you're considering purchasing these parts, I would recommend doing thorough research to find reputable suppliers or sellers with a good track record for selling original LS6 parts in good condition. Additionally, be prepared to negotiate prices and be patient in your search to ensure that you're getting a fair deal. Finally, it's essential to factor in the potential restoration costs when calculating the total investment required.

Details:

The caretaker knew how special these were as they tagged, and stored for decades. Condition as found everything looks Original and Solid. See all images. The Birthplace of Hot Ridding.

Application: 3942415 3942416 GM Chevrolet BBC 291 074 077 392 840 842 L89 L88 L72 L78 L34 LS5 LS6 LS7 ZL1 396 402 427 454 502 Gen IV 1965 65 1967 67 1968 68 1969 69 1970 70 1971 71 1972 72 Corvette Vetted Camry Chevalier Malibu Nova El-Amino Monte Carlo Impala Biscayne II Super Sport SS Rally Talley Z/28 C-10 3100 3124 Cameo Carrier Rock Crusher Cheyenne Muncie M20 M21 M22 12-Bolt Posit Teri-Five 1955 55 1956 56 1957 57 Holley 780 Turbo 400 4:88 4:11 3:73 3:50 Yank COPO Bill Grumpy Jenkins Baldwin Motion NOS OEM Survivor. GM Survivor Chevrolet 1970 454 LS6 Top-End. #3964291 Rectangular Port Hi-Pref Cylinder Heads, Oil Drippier flash chromed Valve Covers /Ems Cap, Winters Aluminum Intake Manifold #3963569 w/Oem Thermostat housing GM-3877660, Oem Distributor hold-down, Vacuum Line and bolts for coil bracket.

part #: 3964291 prices

• $2450.00-$4850.99

specifications rockercove:

• for models: Ls6, 454
• for makes: Chevrolet
• for years: 1970
• brand: Gm
• mpn: 3964291
• color: Silver
• items included: Oil Filler Cap
• material: Iron Aluminum
• vintage part: Yes
• type: Cylinder Heads Intake Manifold Valve Covers
• finish: Unfinished
• country of origin: United States

offer rockercove:

• started: December 20, 2025
• quantity: 1
• sold: 0
• options: Ship-to-home
• availability: In Stock

payments rockercove:

• other
• wallet: Apple-pay
• credit card: Visa

shipping rockercove:

• cost: $0.00
• service: FedEx Ground / FedEx Home Delivery
• type: Calculated
• class: Standard
• carrier: FedEx
• transit: 6-11 Days

seller rockercove:

• # reviews: 1385
• rating: 100.0%
• city: Oceanside, California

returns rockercove:

• policy: No Returns

general rockercove:

• condition: Used
• Engines Engine Parts > Valvetrain Components > Rocker Valve Covers

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