1. Exhaust & Emission Parts To Buy
  2. sku: 19987709273702722
  3. GM 3872226

GM 3872226 Nos Outlet Pipe

fits model: Turbo, Corvair. make: Chevrolet. year: 1965-66.

3872226 Gm Nos 1965-66 Chevrolet Corvair Turbo Outlet Pipe #3872226

( Brand: Gm ), ( Manufacturer Part Number: 3872226 ), ( Part Type: Pipe Outlet ), ( Vintage Part: Yes )

Review GM Nos Chevrolet Outlet Pipe #3872226 fits CORVAIR TURBO 1965-66

The **GM 3872226 Turbo Outlet Pipe** for the **1965-1966 Chevrolet Corvair** is a meticulously crafted aftermarket component designed to enhance the performance and efficiency of the iconic Corvair s turbocharged engine. This high-quality stainless steel pipe is engineered to replace the stock turbo outlet assembly, ensuring a seamless connection between the turbocharger and the exhaust manifold while minimizing restrictive backpressure. Crafted from durable, corrosion-resistant stainless steel, it is built to withstand the demanding conditions of forced induction, providing long-lasting reliability and superior airflow. The pipe features a precise fitment, accommodating the unique contours of the Corvair s turbocharged engine bay, and is designed to integrate smoothly with the factory turbo outlet flange and downstream exhaust components. Whether you're pursuing a classic restomod or a high-performance build, this outlet pipe is an essential upgrade for maintaining optimal turbo function, reducing lag, and maximizing power delivery. Its clean, polished finish not only improves aesthetics but also ensures minimal deposits and blockages, keeping your turbocharger operating at peak efficiency for years to come. Ideal for both restoration projects and modern performance applications, this part is a must-have for any Corvair enthusiast looking to preserve or enhance the legendary performance of their turbocharged engine.

### **Pros and Cons of Buying a 1965-66 Chevrolet Corvair Turbo Outlet Pipe (GM Part Number 3872226)**

#### **Pros:**

1. **Performance Enhancement** The turbo outlet pipe (also known as a "turbocharger exhaust manifold" or "turbo back exhaust") is designed to improve exhaust flow, reducing backpressure and allowing the turbocharger to spool faster. This can lead to better throttle response and increased horsepower, especially in naturally aspirated or lightly modified Corvairs.

2. **Stock Replacement** If your Corvair s original turbo outlet pipe is damaged, corroded, or leaking, replacing it with a new or restored part ensures proper turbo function and prevents vacuum leaks that can hurt engine performance.

3. **Compatibility** The GM part number **3872226** is a known OEM replacement for the 1965-66 Corvair s turbocharged models (including the Corvair Greenbrier and Super Turbo). It fits the **283/327 V8 turbocharged engines** without modification.

4. **Durability** When new or properly restored, this part is made from stamped steel, which, while not as corrosion-resistant as modern materials, is sturdy enough for the Corvair s typical use if maintained.

5. **Ease of Installation** The turbo outlet pipe is relatively straightforward to install, requiring only basic tools (socket set, gasket scraper, and possibly a torque wrench). No major modifications to the engine bay are needed.

6. **Cost-Effective Upgrade** Compared to aftermarket turbo kits or full exhaust systems, this is a budget-friendly way to improve turbo function without major investment.

7. **Historical Accuracy** For restoration projects, using an OEM or high-quality reproduction part maintains period-correct authenticity.

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#### **Cons:**

1. **Corrosion Risk** The 1965-66 Corvair was not known for its rust resistance, especially in the exhaust system. Even a new part may have hidden corrosion if the original was left in place for years. Inspect for pitting, holes, or weak welds before purchasing.

2. **Limited Performance Gain** While the turbo outlet pipe helps, the Corvair s turbo system is already inefficient by modern standards. Gains may be modest unless combined with other modifications (e.g., upgraded turbo, better intercooler, or exhaust headers).

3. **Potential Leaks** Gaskets and bolts can fail over time, leading to vacuum leaks that reduce turbo boost pressure. Regular inspection and maintenance are required.

4. **Weight** The stamped steel design adds weight to the exhaust system, which may slightly reduce acceleration compared to lighter aftermarket alternatives.

5. **Availability and Condition** Finding a **new** GM 3872226 part may be difficult; most available units are used or salvaged. Used parts may require cleaning, welding, or replacement of corroded sections.

6. **Installation Challenges** If the original pipe was bent or warped, straightening it may be difficult. Also, the turbo inlet and outlet flanges must align perfectly to avoid leaks.

7. **Not a Standalone Turbocharger Fix** If your Corvair s turbo is failing (e.g., worn bearings, leaking seals), replacing just the outlet pipe won t resolve underlying turbo issues. A full turbo overhaul may be needed.

8. **Aftermarket Alternatives Exist** Some enthusiasts prefer aftermarket turbo outlet pipes (e.g., from **Turbo Dynamics** or **Corvair Specialties**) that offer better materials (e.g., stainless steel) and improved flow.

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### **Conclusion:**

The **GM 3872226 turbo outlet pipe** is a **practical and cost-effective choice** for restoring or maintaining a 1965-66 Corvair s turbocharged exhaust system. It provides a **direct OEM replacement** with **measurable performance benefits**, particularly in reducing backpressure and improving turbo spool time. However, it is not a **magic fix** expect modest gains unless paired with other modifications.

The **biggest drawbacks** are **corrosion susceptibility** (common in older Corvairs) and the **limited performance upside** compared to more aggressive turbo upgrades. If you re restoring a project car and prioritize **authenticity and reliability**, this part is a solid choice. If you re looking for **maximum turbo performance**, consider supplementing it with an aftermarket turbo outlet pipe or a full turbo rebuild.

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### **Recommendation:** - **Buy it if:**

- You need a **direct OEM replacement** for a leaking or damaged turbo outlet pipe.

- Your budget is limited, and you want a **simple, affordable upgrade**.

- You re restoring a **show car** and want period-correct parts.

- You plan to **inspect and clean** the part thoroughly before installation to prevent corrosion issues.

- **Consider alternatives if:**

- You want **better materials** (e.g., stainless steel aftermarket pipes).

- Your turbo is **severely worn**, and you need a **full rebuild** (not just the outlet pipe).

- You re aiming for **maximum performance** and are open to more aggressive modifications (e.g., upgraded turbo, headers, or intercooler).

- You suspect **hidden corrosion** and are uncomfortable welding or repairing a used part.

- **Additional Tips:**

- **Inspect the part closely** for cracks, holes, or rust before purchasing.

- **Replace gaskets and bolts** during installation to prevent future leaks.

- **Pair with a turbo tune** (if equipped) to optimize boost pressure.

- **Monitor for leaks** after installation, especially around the turbo flange and exhaust connections.

**Final Verdict:** The **GM 3872226 is a worthwhile purchase for basic turbo maintenance or restoration**, but it s not a high-performance solution. For serious turbocharged Corvair projects, weigh the pros and cons carefully against aftermarket options.

Details:

Has surface rust. Not pretty but still NOS. NOS 1965-66 Chevrolet Corvair Turbo Outlet Pipe #3872226 2nd design. $150.00 plus $25.00 for Priority Mail Shipping in the 48 States only.

specifications emissyste:

  • for models: Turbo, Corvair
  • for makes: Chevrolet
  • for years: 1965-66
  • brand: Gm
  • mpn: 3872226
  • part type: Pipe Outlet
  • vintage part: Yes

general emissyste:

  • Car Truck Parts Accessories > Exhaust Emission Systems > Other Exhaust Emission Parts
  • condition: New other see details

seller emissyste:

  • rating: 100.0%
  • # reviews: 1584
  • city: Middleton, Wisconsin

shipping emissyste:

  • class: Expedited
  • service: USPS Priority Mail
  • type: Fixed
  • cost: $25.00
  • transit: 4-10 Days
  • carrier: USPS

returns emissyste:

  • policy: No Returns

payments emissyste:

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offer emissyste:

  • quantity: 1
  • options: Ship-to-home
  • started: February 7, 2026
  • availability: In Stock
  • sold: 0
for models: turbo, corvair, for makes: chevrolet, for years: 1965-66, part type: pipe outlet, vintage part: yes,
category: auto parts > car truck parts accessories > exhaust emission systems > exhaust emission parts, sku: 19987709273702722,
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