1. Cylinder Heads & Parts Engines Components For Sale
  2. sku: 12062032969381711
  3. CHEVROLET 3886240

CHEVROLET 3886240 Gm Cylinder Heads 3813512

fits model: Corvair. make: Chevrolet. year: 1962–1963.

3886246 Chevrolet 3886240 Used Pair 1962 1963 Gm Corvair Aluminum Cylinder Heads 3813512

( Manufacturer Part Number: 3886240 ), ( Type: Cylinder Head ), ( Material: Aluminum ), ( Vintage Part: Yes ), ( Country Of Origin: United States ), ( Performance Part: No )

Review CHEVROLET Used Pair Gm Aluminum Cylinder Heads fits CORVAIR 1962–1963

The **Chevrolet 3886240 1962-1963 GM Corvair Cylinder Heads (part number 3813512)** are a meticulously crafted, high-performance component designed to elevate the already legendary efficiency and torque output of the iconic Corvair s air-cooled, rear-mounted flat-six engine. These cylinder heads, forged from durable cast iron, embody the engineering precision of General Motors mid-century innovation while delivering the robust performance demanded by enthusiasts and restorers alike. The design features a classic, streamlined shape with precisely machined combustion chambers optimized for improved airflow and combustion efficiency, ensuring a more aggressive and responsive power delivery. The intake and exhaust ports are generously sized, allowing for enhanced cylinder scavenging and scavenging, which translates to better low-end torque and smoother high-revving characteristics hallmarks of the Corvair s unique performance profile. These heads are fully compatible with the 1962 and 1963 model years, fitting seamlessly into the engine bay of the Corvair s distinctive air-cooled setup, where their compact yet robust construction complements the engine s compact yet powerful nature. Whether used in a stock restoration, a high-performance build, or a classic drag racing application, these cylinder heads bring a blend of authenticity and performance, ensuring that the Corvair s legendary "air-cooled muscle" reputation is both preserved and amplified. Built to withstand the demands of modern modifications such as high-flow intake manifolds, performance camshafts, or forced induction these heads are a testament to the enduring legacy of GM s engineering prowess, offering a perfect balance of heritage and high-performance capability for the discerning Corvair owner.

### Pros and Cons of Buying Chevrolet Corvair Cylinder Heads (Part Numbers 3886240 for 1962-1963, 3813512 for 1964-1965)

#### **Pros:**

1. **Authentic Restoration** These are genuine factory parts, ensuring an accurate and high-quality restoration of your Corvair. Aftermarket heads may not fit or perform as reliably.

2. **Proven Reliability** Chevrolet designed these heads for the Corvair s air-cooled, rear-engine layout, meaning they are optimized for the engine s unique airflow and cooling dynamics.

3. **Durability** Original heads are built to last, especially if they come from a well-maintained vehicle. They often have thicker casting walls and better machining tolerances than aftermarket alternatives.

4. **Resale Value** A restored Corvair with original or high-quality OEM parts holds its value better than one patched together with aftermarket components.

5. **Ease of Installation** Since they are designed for the Corvair, they should fit without major modifications, assuming they are in good condition.

6. **Performance Potential** If the heads are in good shape, they can support stock or mildly modified performance without excessive stress.

7. **Historical Accuracy** For enthusiasts who prioritize period-correct builds, these heads are ideal for maintaining the vehicle s original character.

#### **Cons:**

1. **Age and Wear** Original heads may show signs of wear, such as cracked valves, worn valve seats, or warped decks. Inspection is critical to avoid hidden issues.

2. **Potential for Corrosion** Air-cooled engines are prone to rust, especially in the heads. A thorough cleaning and inspection are necessary to rule out internal corrosion.

3. **Limited Availability** Finding a complete set in good condition can be difficult, and prices may be high due to scarcity.

4. **Cost** Genuine Chevrolet parts, especially for older models, can be expensive. Depending on condition, you may pay significantly more than aftermarket alternatives.

5. **Mismatched Condition** If the heads are in better shape than the rest of the engine, you may end up spending extra to restore the block, valves, and other components to match.

6. **No Modern Upgrades** Unlike aftermarket heads, these do not come with modern features like improved valve springs, better sealing materials, or performance enhancements.

7. **Potential for Hidden Damage** Without a full teardown and inspection, you might not discover issues like cracked combustion chambers or warped decks until after installation.

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### **Conclusion and Recommendation**

Buying original Chevrolet Corvair cylinder heads (3886240 for 1962-1963, 3813512 for 1964-1965) is a strong choice if you prioritize authenticity, reliability, and long-term value. These parts are ideal for a full restoration where historical accuracy and durability are key. However, they require careful inspection to ensure they are free from corrosion, cracks, or wear that could lead to future problems.

**Recommendation:**

- **If restoring a show car or preserving originality:** Proceed with purchasing original heads, but inspect them thoroughly (or have a trusted mechanic do so) before installation. Consider restoring the entire engine to match the heads condition.

- **If building a performance or project car:** Weigh the cost against aftermarket options. Aftermarket heads (e.g., from companies like **Corvair Specialties** or **Air Cooled Engines**) may offer better performance, modern materials, and lower prices while still maintaining compatibility.

- **If buying used heads:** Look for those that have been professionally cleaned, inspected, and possibly rebuilt. Avoid heads with visible cracks, excessive pitting, or warped decks.

- **Budget Consideration:** If funds are tight, prioritize the heads over cosmetic restorations, as they are critical to the engine s function.

Ultimately, original heads are the best choice for purists, but aftermarket alternatives can be a practical compromise for those balancing cost, performance, and authenticity. Always verify the condition of the parts before purchasing to avoid costly surprises.

Details:

USED Pair 1962 1963 GM Corvair Aluminum Cylinder Heads Casting numbers 3813512 and 3886246, Good condition for used.

part #: 3886240 prices

  • $300.00-$800.00

specifications cylinderheapar:

  • for models: Corvair
  • for makes: Chevrolet
  • for years: 1962-1963
  • mpn: 3886240
  • type: Cylinder Head
  • material: Aluminum
  • vintage part: Yes
  • country of origin: United States
  • performance part: No

payments cylinderheapar:

  • wallet: Google-pay
  • credit card: Mastercard
  • money order
  • cash
  • other

seller cylinderheapar:

  • rating: 99.6%
  • city: French Camp, California
  • # reviews: 8992

shipping cylinderheapar:

  • service: USPS Ground Advantage
  • cost: $100.00
  • carrier: USPS
  • transit: 4-8 Days
  • class: Standard
  • type: Fixed

offer cylinderheapar:

  • availability: In Stock
  • options: Ship-to-home
  • sold: 0
  • started: May 7, 2026
  • quantity: 1
  • best offers: True

returns cylinderheapar:

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

general cylinderheapar:

  • Car Truck Parts Accessories > Engines Engine Parts > Cylinder Heads
  • condition: Used
for models: corvair, for makes: chevrolet, for years: 1962-1963, type: cylinder head, vintage part: yes, country of origin: united states, performance part: no,
category: auto parts > car truck parts accessories > engines engine parts > cylinder heads, material: aluminum, sku: 12062032969381711,
Chevrolet 3886240 Is Similar To:
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2 offers $300.00–$800.00 USD
  • Used. Offer #1 priced at $300.00 + $100.00 shipping estimate = $400.00* total. Good condition for used. Casting numbers and .+$100.00 shipping
  • New. Offer #2 priced at $800.00 + $75.00 shipping estimate = $875.00* total. Model: CORVAIR. These are the standard (low horsepower) heads for the 1962 & 1963 Corvairs.+$75.00 shipping

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