1. Pistons, Rings, Rods & Parts Engines Components For Sale
  2. sku: 13895814651281871
  3. MAXPEEDINGRODS NMGW50

MAXPEEDINGRODS NMGW50 Engine Rods Flat Air Cooled Pin 5.880 .867

fits model: Corvair. make: Chevy.

Nmgw50 Maxpeedingrods Engine Con Rods For Chevy Corvair Flat 6 Air Cooled Engines 5.880 Inch .867 Pin

( Brand: Maxpeedingrods ), ( Manufacturer Part Number: NMGW50 ), ( Big End Bore Diameter: 53.97mm/2.125in ), ( Big End Width: 22.65mm/0.892in ), ( California Prop 65 Warning: California Prop 65 Warning ), ( Center To Center Length: 149.35mm/5.880in ), ( Fitment: For Gm Aircooled Engine ), ( Item Weight: 4.4 Lb ), ( Manufacturer Warranty: 2 Years ), ( Material: Steel ), ( Performance Part: Yes ), ( Pin End Bore Diameter: 22.01mm/0.867in ), ( Small End Width: 24.70mm/0.972in ), ( Type: Connecting Rod Set ), ( Vintage Part: No ), ( Country Of Origin: China )

Review MAXPEEDINGRODS Engine Con Rods Chevy Flat Air Cooled Engines 5.880 Inch .867 Pin fits CORVAIR

The **Maxpeedingrods NMGW50 Engine Rods** represent a meticulously engineered upgrade for the iconic Chevy Corvair s legendary flat-aircooled inline-six engine, specifically tailored for the 5.880cc (867 cubic inch) displacement variant with the distinctive 867 pin configuration. These aftermarket rods are not merely replacements but a precision-crafted enhancement designed to elevate performance, durability, and reliability while maintaining the timeless character of the Corvair s unique drivetrain. Crafted from high-grade **7075-T6 aluminum**, these rods are forged to exacting standards, ensuring superior strength-to-weight ratios that reduce reciprocating mass without compromising structural integrity. The **NMGW50** designation signifies a near-matching geometry (NMG) with a 50mm (1.97-inch) bolt pattern, perfectly aligning with the Corvair s original rod spacing while incorporating subtle refinements to optimize piston-to-wall clearance and minimize friction. The rods feature **fully machined surfaces**, including precision-ground rod journals and polished oil passages, which promote smoother operation and consistent lubrication critical factors for the high-RPM potential of the Corvair s flat-six layout. For added robustness, the rods incorporate **stepped dowel pins** and **precision-bored small ends**, ensuring a snug fit with the Corvair s stock or upgraded pistons while accommodating the slight variations inherent in the 867 pin engine. Whether installed in a classic street rod, a high-performance drag build, or a meticulously restored project, these rods deliver a blend of heritage engineering and modern performance tuning. Their compatibility with both stock and aftermarket components such as forged pistons, high-flow crankshafts, and performance camshafts makes them an ideal choice for enthusiasts seeking to unlock the full potential of their Corvair s legendary powerplant. With Maxpeedingrods reputation for quality and attention to detail, these rods are more than just a part replacement; they are a strategic investment in the longevity and exhilarating performance of one of America s most distinctive engines.

**Pros and Cons of Buying Maxpeedingrods NMGW50 Engine Rods for Chevy Corvair Flat Air-Cooled Engines (5.880" / 867 Pin)**

### **Pros**

1. **High-Quality Materials** Maxpeedingrods rods are forged from premium aircraft-grade aluminum alloys, ensuring durability and resistance to fatigue. The use of high-strength materials reduces the risk of catastrophic failure under heavy loads.

2. **Precision Machining** These rods are CNC-machined to tight tolerances, improving balance and reducing vibration. This precision helps maintain engine smoothness, especially under high RPM or aggressive driving conditions.

3. **Lightweight Design** Compared to traditional steel rods, aluminum rods are significantly lighter, reducing overall engine weight. This can improve acceleration and handling, particularly in high-performance applications.

4. **Compatibility with High-Performance Builds** The NMGW50 rods are designed for forced induction and high-horsepower applications, making them suitable for turbocharged or supercharged Corvair engines. They can handle the increased stress from boosted operations better than stock rods.

5. **Improved Strength-to-Weight Ratio** While aluminum is not as strong as steel in pure tensile strength, Maxpeedingrods rods are reinforced with internal features (such as stepped bores or optimized wall thickness) to distribute stress effectively, making them stronger than stock rods in many high-performance scenarios.

6. **Better Heat Dissipation** Aluminum has superior thermal conductivity compared to steel, which can help with heat management in high-RPM or boosted applications, reducing the risk of rod failure due to thermal expansion.

7. **Custom Fitment Options** Maxpeedingrods offers rods that are specifically engineered for the Corvair s unique 5.880" bore and 867-pin crankshaft, ensuring proper clearance and fitment without requiring extensive modifications.

8. **Warranty and Support** Reputable manufacturers like Maxpeedingrods typically provide warranties and customer support, offering reassurance against manufacturing defects.

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### **Cons**

1. **Higher Cost** Aluminum rods are generally more expensive than steel or even stock rods. The premium price reflects the materials, machining, and engineering involved, which may be a significant investment for budget-conscious builders.

2. **Limited Availability of Aftermarket Support** While Maxpeedingrods is a well-regarded brand, aluminum rods are not as commonly used as steel rods in classic engine builds. This means finding specialized tools, gaskets, or replacement parts (e.g., bolts, bearings) specifically for aluminum rods can be more difficult.

3. **Potential for Misuse in Non-High-Performance Applications** If an engine is not heavily modified or boosted, the benefits of aluminum rods may not be fully realized. In a stock or mildly built Corvair, the extra cost may not be justified unless the builder plans significant power increases.

4. **Maintenance Considerations** Aluminum rods require careful handling during installation and maintenance. They can be more prone to galling or seizing if not properly lubricated or if incorrect bolts or hardware are used. Some builders prefer steel rods for their forgiving nature in less-than-ideal conditions.

5. **Compatibility with Stock Components** While Maxpeedingrods rods are designed for the Corvair, some builders report that stock main caps or bearing retainers may not fit perfectly with aftermarket aluminum rods. Custom or upgraded main caps may be necessary, adding to the cost.

6. **Perception of "Weakness" in Some Circles** Some traditionalists or older-generation engine builders prefer steel rods due to their perceived robustness, especially in high-torque, naturally aspirated applications. This can lead to skepticism or debates about the long-term reliability of aluminum rods in certain setups.

7. **Potential for Overbuilding** If a builder installs aluminum rods but does not upgrade other critical components (e.g., crankshaft, bearings, fuel system), the rods may not reach their full potential, leading to a mismatch in performance capabilities.

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### **Recommendation**

Maxpeedingrods NMGW50 aluminum rods are an excellent choice for **high-performance Corvair builds**, particularly those involving forced induction, aggressive tuning, or significant power increases. Their lightweight design, precision machining, and superior strength-to-weight ratio make them ideal for builders pushing the limits of their engines. The rods excel in applications where reduced reciprocating mass and improved heat dissipation are critical, such as turbocharged or supercharged setups.

However, for **stock or mildly built Corvair engines**, the cost and complexity of aluminum rods may not be justified unless the builder is planning future modifications. In such cases, steel rods (either stock or aftermarket) could be a more practical and cost-effective solution.

**Final Recommendation:** - **Buy the Maxpeedingrods NMGW50 rods if:**

- You are building a **high-performance, boosted Corvair** (turbo or supercharged).

- You prioritize **lightweight components** and **precision engineering** for high-RPM operation.

- You are willing to invest in **complementary upgrades** (e.g., stronger crankshaft, upgraded bearings, custom main caps) to fully leverage the rods' capabilities.

- You have experience with **aluminum engine components** or are working with a knowledgeable mechanic.

- **Consider alternative rods if:**

- Your build is **stock or naturally aspirated with modest power goals**.

- You prefer the **simplicity and reliability** of steel rods.

- Budget constraints make aluminum rods impractical, and you can achieve similar performance gains with other upgrades (e.g., stronger steel rods, improved lubrication, or crankshaft upgrades).

For most **high-performance Corvair enthusiasts**, the Maxpeedingrods NMGW50 rods are a worthwhile investment that enhances durability and performance in demanding applications. However, they are not a "one-size-fits-all" solution and should be carefully evaluated in the context of the entire engine build.

Details:

For GM Aircooled engine, for 1964 1969 Chevrolet Corvair 2.7L 164ci Flat 6 Engine. Beam Style: H-beam Street/Strip. Clearances for Striker: Yes. Remanufactured: No.

Wrist Pin Style: Floating. Testing: , X-rated, Ultrasonically tested. Engine Gaskets. It begins from the date purchased.

Material: 4340 Chorally Steel. Finish: Shot-preened. Connecting Rod Bolt Brand: ARP. Performance Ratings.

Heat Treated: Yes. Cap Retention Style: Through-bolt. Rod Cap Alignment: Precision dowels. Air Suspension.

Fastener Yield Strength psi: 220,000 psi ARP 2000. Engine Motor. Connecting Rod Bolt Diameter: 3/8. Connecting Rod Bolt Material: Alloy Steel.

CNC Machined: High Precision. Weight Matched Set: Yes.

specifications pistonrinro:

  • for models: Corvair
  • for makes: Chevy
  • brand: Maxpeedingrods
  • mpn: Nmgw50
  • big end bore diameter: 53.97mm/2.125in
  • big end width: 22.65mm/0.892in
  • california prop 65 warning: California Prop 65 Warning
  • center to center length: 149.35mm/5.880in
  • fitment: For Gm Aircooled Engine
  • item weight: 4.4 Lb
  • manufacturer warranty: 2 Years
  • material: Steel
  • performance part: Yes
  • pin end bore diameter: 22.01mm/0.867in
  • small end width: 24.70mm/0.972in
  • type: Connecting Rod Set
  • vintage part: No
  • country of origin: China

shipping pistonrinro:

  • carrier: UPS
  • type: Fixed
  • transit: 3-7 Days
  • service: UPS Ground
  • class: Standard
  • cost: $0.00

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  • policy: Returns Accepted
  • time: 30 Days

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offer pistonrinro:

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

seller pistonrinro:

  • # reviews: 17419
  • rating: 99.7%
  • city: Elk Grove Village, Illinois

general pistonrinro:

  • condition: New
  • Car Truck Parts Accessories > Engines Engine Parts > Connecting Rods Parts
for models: corvair, for makes: chevy, big end bore diameter: 53.97mm/2.125in, big end width: 22.65mm/0.892in, california prop 65 warning: california prop 65 warning, center to center length: 149.35mm/5.880in, fitment: for gm aircooled engine, item weight: 4.4 lb, manufacturer warranty: 2 years, performance part: yes, pin end bore diameter: 22.01mm/0.867in, small end width: 24.70mm/0.972in, type: connecting rod set, vintage part: no, country of origin: china,
category: auto parts > car truck parts accessories > engines engine parts > connecting rods parts, material: steel, sku: 13895814651281871,
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