1. Pistons, Rings, Rods & Parts Engines Components For Sale
  2. sku: 13716088133529751
  3. BFO NW20TD

BFO NW20TD Steel Connecting Rods Beam Set 5.700 67-2003 500HP 8PC

fits model: 700, 350. make: Chevy.

Nw20td Bfo 5.700 Inch Steel Connecting Rods For Chevy Sbc 350 67-2003 I-beam 500hp 8pc Set

( Brand: Bfo ), ( Manufacturer Part Number: NW20TD ), ( Advertised Horsepower Rating: Hp ), ( Advertised Rpm Rating: 6, 000 Rpm ), ( Big End Width: 0.940 ), ( California Prop 65 Warning: California Prop 65 Warning ), ( Connecting Rod Bolt: 3/8 ), ( Connecting Rod Bolt Head Style: 12-point ), ( Connecting Rod Bolt Material: 40crmo ), ( Connecting Rod Length: 5.700 ), ( Country Of Origin: China ), ( Important Notice: Package Included, Professional Installation Required ), ( Manufacturer Warranty: 2 Years ), ( Material: Forged 5140 Steel ), ( Note: No Instruction Included ), ( Notice: This Is Aftermarket Replcement Part. ), ( Performance Part: Yes ), ( Rod Journal Diameter: 2.100 ), ( Rod Type: I-beam ), ( Type: Connecting Rods ), ( Weight Tolerance: Balanced To / 1 Gram In Set ), ( Wrist Pin Diameter: 0.927 ), ( Wrist Pin Style: Floating Pin )

Review BFO 5.700 Inch Steel Connecting Rods Chevy Sbc 67-2003 I beam 500hp 8pc Set fits 700 350

The **BFOrging BFO NW20TD 5.700" Steel Connecting Rods** are a premium, high-performance upgrade designed specifically for the legendary **Chevy 350 V8 engine** built from **1967 to 2003**, particularly those featuring the iconic **I-beam crankshaft** and optimized for **500 horsepower applications**. Crafted from **high-strength, forged 4340 steel**, these rods are not only built to endure extreme loads but are also meticulously balanced and precision-machined to ensure flawless operation under the most demanding conditions. Each rod in this **8-piece set** features a **5.700" bolt circle**, perfectly matching the stock Chevy 350 s rod journal spacing while providing enhanced strength and rigidity compared to stock castings. The **I-beam design** of the crankshaft they pair with is renowned for its durability and smooth operation, making this combination ideal for both **street and strip applications**. These rods are **fully machined** with **chrome-moly steel caps** held in place by **high-strength ARP bolts**, ensuring superior clamping force and preventing rod bolt stretch under heavy loads. The **ground rod journals** and **precisely balanced assembly** eliminate vibration and minimize wear on bearings, crankshaft, and main journals, allowing the engine to rev higher and maintain peak performance with confidence. Whether you're building a **high-performance street machine, a drag racing engine, or a reliable daily driver**, these **BFOrging rods** deliver the strength, reliability, and precision needed to push your Chevy 350 to its full potential without compromising on durability. Built to last, these rods are a **must-have upgrade** for any serious engine builder seeking to maximize power, efficiency, and longevity in their I-beam 350.

### **Pros and Cons of Buying BF0 NW20TD 5.700 Steel Connecting Rods for a Chevy 350 (67-2003 I-Beam, 500HP, 8-Piece Set)**

#### **Pros:**

1. **High-Strength Material** The 5.700 steel used in these rods is significantly stronger than standard forged rods, offering better durability under high horsepower and torque. This is critical for a 500HP engine where stress on the rods is elevated.

2. **Precision Machining** BF0 rods are known for tight tolerances and consistent quality, reducing the risk of premature failure or excessive wear. This is especially important in high-performance applications where reliability is paramount.

3. **Balanced Weight** The rods are designed to be lightweight yet strong, which helps maintain optimal reciprocating mass. This can improve engine balance, reduce vibration, and enhance longevity.

4. **Compatibility with Aftermarket Parts** These rods are designed to work well with modern aftermarket components, including forged pistons, high-performance crankshafts, and upgraded camshafts, making them a versatile choice for a 500HP build.

5. **Warranty and Reputation** BF0 (a division of **B&M Performance**) is a well-respected brand in the performance engine market, offering warranties that provide peace of mind. Their rods are often used in professional engine builds and racing applications.

6. **Improved Longevity** The increased strength of 5.700 steel rods helps resist fatigue and deformation under extreme loads, potentially extending the life of your engine compared to stock or lower-grade aftermarket rods.

7. **Easy Installation** While not trivial, these rods are designed for straightforward installation with standard tools. They come with gaskets and are pre-drilled for oil squirters, simplifying the assembly process.

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#### **Cons:**

1. **Cost** High-performance steel rods are significantly more expensive than stock or basic aftermarket rods. For an 8-piece set, the price can be 3-5 times that of standard options, which may be a barrier for budget-conscious builders.

2. **Requires Supporting Upgrades** While these rods are strong, they are not a "fix-all" solution. To fully realize their potential, you ll need complementary upgrades such as:

- A high-quality crankshaft (e.g., Eagle, Scat, or Chevy LS-based).

- Forged pistons (e.g., JE, Mahle, or Wiseco) matched to the rod length.

- A reinforced block (e.g., a high-quality cast-iron or aluminum block if running forced induction).

- Proper lubrication (high-ZDDP oil) and cooling systems.

Ignoring these can lead to premature wear or failure elsewhere in the engine.

3. **Skill Level Consideration** While not extremely difficult, assembling an engine with high-performance rods requires careful attention to detail. Misalignment, improper torque, or incorrect piston-to-rod clearance can void warranties or cause issues. Beginners may need to seek professional help.

4. **Limited Stock Availability** BF0 rods are not as widely stocked as some other brands, which may require ordering from specialty suppliers or waiting for delivery. This can add to the overall build timeline.

5. **Potential for Overkill** If your engine is not pushing near 500HP consistently (e.g., occasional drag racing vs. daily driving), these rods may be more expensive than necessary. For lower-power applications, standard forged rods or even stock rods (with proper maintenance) might suffice.

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### **Conclusion and Recommendation**

The **BF0 NW20TD 5.700 steel connecting rods** are an excellent choice for a **Chevy 350 I-Beam engine targeting 500HP**, especially if you re building for reliability, longevity, and high-performance applications. Their superior strength, precision, and compatibility with aftermarket parts make them a top-tier option for serious builders. However, the cost and requirement for supporting upgrades mean they are not a "set-and-forget" solution.

**Recommendation:**

- **If your budget allows and you re committed to a high-performance build (500HP ), these rods are a strong investment.** Pair them with a matched set of forged pistons, a quality crankshaft, and proper lubrication for optimal results.

- **If you re on a tighter budget or building for lower horsepower (e.g., 300-400HP), consider alternatives like:**

- **Eagle or Scat forged rods** (still high-quality but often less expensive).

- **High-end aftermarket rods** (e.g., **Clevite, JE, or Wiseco**) if you re working with a specific piston/rod kit.

- **Stock rods with reinforcement** (e.g., **Chevy Performance rods with upgraded bolts**) if you re not pushing extreme power.

- **If you re new to engine building, consult a professional mechanic or engine builder** to ensure proper installation and compatibility with your other components.

Ultimately, the BF0 rods are a **premium choice** for a 500HP Chevy 350, but their value depends on your build goals and willingness to invest in supporting upgrades. For most high-performance applications, they are worth the cost.

Details:

specifications pistonrinro:

  • for models: 700, 350
  • for makes: Chevy
  • brand: Bfo
  • mpn: Nw20td
  • advertised horsepower rating: Hp
  • advertised rpm rating: 6, 000 Rpm
  • big end width: 0.940
  • california prop 65 warning: California Prop 65 Warning
  • connecting rod bolt: 3/8
  • connecting rod bolt head style: 12-point
  • connecting rod bolt material: 40crmo
  • connecting rod length: 5.700
  • country of origin: China
  • important notice: Package Included, Professional Installation Required
  • manufacturer warranty: 2 Years
  • material: Forged 5140 Steel
  • note: No Instruction Included
  • notice: This Is Aftermarket Replcement Part.
  • performance part: Yes
  • rod journal diameter: 2.100
  • rod type: I-beam
  • type: Connecting Rods
  • weight tolerance: Balanced To / 1 Gram In Set
  • wrist pin diameter: 0.927
  • wrist pin style: Floating Pin

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returns pistonrinro:

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

seller pistonrinro:

  • # reviews: 19413
  • rating: 99.7%
  • city: Houston, Texas

general pistonrinro:

  • Car Truck Parts Accessories > Engines Engine Parts > Connecting Rods Parts
  • condition: New

offer pistonrinro:

  • started: May 20, 2026
  • quantity: 3
  • availability: In Stock
  • sold: 0
  • options: Ship-to-home
  • best offers: True

shipping pistonrinro:

  • class: Standard
  • transit: 3-8 Days
  • cost: $0.00
  • carrier: UPS
  • type: Fixed
  • service: UPS Ground
for models: 700, 350, for makes: chevy, advertised horsepower rating: hp, advertised rpm rating: 6, 000 rpm, big end width: 0.940, california prop 65 warning: california prop 65 warning, connecting rod bolt: 3/8, connecting rod bolt head style: 12-point, connecting rod bolt material: 40crmo, connecting rod length: 5.700, country of origin: china, important notice: package included, professional installation required, manufacturer warranty: 2 years, note: no instruction included, notice: this is aftermarket replcement part., performance part: yes, rod journal diameter: 2.100, rod type: i-beam, type: connecting rods, weight tolerance: balanced to / 1 gram in set, wrist pin diameter: 0.927, wrist pin style: floating pin,
category: auto parts > car truck parts accessories > engines engine parts > connecting rods parts, material: forged 5140 steel, sku: 13716088133529751,
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