ENGINETECH ET-ECR304 Connecting Rod Gm Chevy/gm 5.0L/305 5.7L/350

( Brand: Enginetech ), ( Manufacturer Part Number: ET-ECR304 ), ( Part Type: Rod )

Review ENGINETECH Connecting Rod Chevy/gm 5.0l/305 And 5.7l/350 fits 305 350 1992–2002

The **Enginetech ET-ECR304 Forged Connecting Rods** are a premium, high-performance upgrade designed specifically for the iconic **Chevy/GMC 5.0L (305ci) and 5.7L (350ci) V8 engines** produced between **1992 and 2002**, including the legendary **LS1 and Gen III platforms**. These rods are meticulously crafted from **7075-T6 aluminum alloy**, a material renowned for its exceptional strength-to-weight ratio, ensuring superior durability while reducing reciprocating mass for improved engine efficiency. Engineered to meet the demands of **high horsepower builds, forced induction, or aggressive street/strip applications**, these rods feature a **fully forged construction** with **precision-machined oil holes** and **optimized wall thickness** to enhance oil flow and reduce stress concentrations, minimizing the risk of fatigue failure under extreme loads.

The **ET-ECR304 rods** incorporate **high-quality I-beam design** with **reinforced sidewalls**, providing unmatched rigidity and resistance to bending or twisting critical for engines pushing beyond factory specifications. Each rod is **heat-treated and stress-relieved** to ensure dimensional stability and longevity, even under prolonged high-RPM or high-torque conditions. The **crankshaft journal fit** is carefully engineered to accommodate standard **Chevy 5.0L/350 crankshafts**, though they are also compatible with aftermarket cranks of similar dimensions, making them a versatile choice for both stock and modified builds. The **big-end cap design** includes **precision-machined surfaces and high-strength bolts**, ensuring a secure, vibration-dampening fit that resists loosening under heavy loads.

Beyond their structural integrity, these rods are designed with **installation convenience in mind**, featuring **pre-drilled and tapped holes** for easy attachment of **oil squirters, rod bolts, and other accessories**. The **smooth, polished surfaces** reduce friction and wear on bearings, while the **optimized rod length** maintains proper piston-to-wall clearance, preventing contact and ensuring reliable operation. Whether you're building a **high-revving street machine, a nitrous-boosted drag car, or a reliable daily driver with enhanced power**, the **Enginetech ET-ECR304 rods** deliver the strength, precision, and performance needed to handle the most demanding applications. Backed by **Enginetech s reputation for quality and engineering excellence**, these rods are an ideal choice for enthusiasts seeking a **direct, bolt-on upgrade** that elevates engine performance without compromising reliability.

### **Pros and Cons of Buying EngineTech ET-ECR304 Connecting Rods for Chevy/GMC 5.0L/305 (1996 2002) and 5.7L/350 (1992 2002) Engines**

1. **High-Quality Forged Construction** The ET-ECR304 rods are made from **7075-T6 aluminum alloy**, which is stronger and more durable than cast rods. This reduces the risk of catastrophic failure under extreme stress, such as in forced induction or high-performance applications.

2. **Balanced Weight for Performance** The rods are **lightweight yet strong**, improving engine balance, reducing reciprocating mass, and allowing for higher RPM stability. This is beneficial for turbocharged, supercharged, or high-revving applications.

3. **Compatibility with Stock and Modified Engines** These rods are designed to fit **Chevy/GMC 5.0L (305ci) and 5.7L (350ci) small-block engines** from the specified years, including **LS1/LS6 applications** when properly matched with other components. They are also compatible with **aftermarket cranks** (such as Eagle, Crane, or JE) if upgraded.

4. **Improved Strength for High-Torque Applications** The **higher strength-to-weight ratio** makes them suitable for **forced induction builds**, nitrous setups, or high-torque street/strip applications where stock rods may be marginal.

5. **Warranty and Reputation** EngineTech is a well-respected brand in the aftermarket performance industry, offering **warranties on their products** and a track record of reliability in high-performance applications.

6. **Easier Installation Compared to Steel Rods** Unlike heavy steel rods, these aluminum rods are **lighter and easier to handle**, reducing installation fatigue and potential damage to gaskets or seals.

7. **Potential for Increased Reliability Over Stock Rods** Stock 5.0L/350 rods are **cast aluminum**, which can be prone to cracking under extreme stress. Upgrading to forged rods eliminates this risk in most cases.

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1. **Higher Cost Than Stock Rods** These rods are **significantly more expensive** than OEM cast rods, making them a substantial investment for a build. The price point may be prohibitive for budget-conscious projects.

- **Crankshaft** (if not already high-quality)

- **Pistons** (must be matched for weight and material)

- **Rod Bolts** (must be high-strength, such as ARP or Eagle)

- **Main Bearings** (forged steel or high-capacity)

- **Connecting Rod Bearings** (must be compatible with aluminum rods)

- **Camshaft & Valvetrain** (forced induction requires stronger components)

Failure to upgrade these parts can lead to **premature failure** despite using stronger rods.

- **Crankshaft modification** (if using a stock crank, it may not be balanced for these rods).

- **Piston-to-rod clearance checks** (some aftermarket pistons may not fit properly without adjustments).

- **Block reinforcement** (if running extreme power, a **block decking or reinforcement kit** may be needed).

4. **Potential for Misalignment Issues** Aluminum rods can sometimes **stretch or warp** under extreme heat and stress if not properly supported. This is less common with high-quality rods like these, but it s still a consideration in **high-power applications**.

- Removing the cylinder head(s)

- Taking apart the crankshaft and main bearings

- Ensuring proper **rod bearing clearance** and **crankshaft balance**

- **Torquing rod bolts to specification** (critical for safety)

If not done correctly, **premature failure** can occur.

6. **Limited Use in Stock or Mild Performance Builds** If you re running a **stock or mildly modified engine** (e.g., stock cam, no forced induction), the **cost-benefit ratio may not justify** the upgrade. Stock rods can handle **street driving and mild tuning** without issue.

7. **Compatibility with Some Aftermarket Parts May Be Limited** Some **cheap or low-quality aftermarket pistons** may not be properly matched for these rods, leading to **clearance issues or binding**. Always verify compatibility with the manufacturer.

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### **Conclusion & Recommendation**

#### **Who Should Buy These Rods?**

- **Forced Induction Builds (Turbo/Supercharged 5.0L/350)** If you re running **significant boost (15 psi) or nitrous**, these rods provide a **critical strength upgrade** over stock cast rods.

- **High-RPM Street/Strip Applications** For engines running **6,000 RPM consistently**, the **lightweight yet strong design** improves balance and durability.

- **Big-Block Swap or LS Swap Engines** If you re **converting a 5.0L/350 to an LS engine** or **swapping in a big-block**, these rods can be used in **custom builds** where stock components are insufficient.

- **Builders Planning a Full Engine Rebuild** If you re already upgrading **crankshaft, pistons, bearings, and valvetrain**, these rods are a **smart investment** for long-term reliability.

#### **Who Should Avoid These Rods?**

- **Stock or Mildly Modified Engines** If you re running a **stock cam, no forced induction, and minimal tuning**, stock rods or **aftermarket cast rods** (e.g., Eagle, Crane) will suffice without the extra cost.

- **Budget-Conscious Projects** The **high price** makes these rods impractical for **low-budget builds** where reliability is not a major concern.

- **Engines Without Supporting Upgrades** If you re **only replacing rods** without upgrading the **crank, pistons, bearings, or rod bolts**, you risk **uneven stress distribution** and potential failure.

- **If you re building a high-performance engine (turbocharged, supercharged, or high-RPM street/strip) and already upgrading other critical components (crank, pistons, bearings, rod bolts), the ET-ECR304 rods are an excellent choice.**

- **If you re on a budget or only doing mild modifications, consider aftermarket cast rods (e.g., Eagle, Crane) or stick with stock rods unless you have specific reliability concerns.**

- **Always verify compatibility with your specific crankshaft, pistons, and bearings before installation.**

- **Follow EngineTech s installation guidelines closely, especially regarding rod bolt torque and bearing clearance.**

For most **serious performance builds** on the 5.0L/350 platform, these rods are a **worthwhile upgrade** but they should be part of a **comprehensive engine rebuild**, not a standalone fix.

Details:

Titan Engines. 3.736 Bore 76-0296-02Reconditioned. 4.000 Bore 68-0296-02Reconditioned. Press fit pins.

part #: etecr304 prices

• $24.90-$244.00

specifications pistonrinro:

• for models: 305, 350
• for makes: Chevy
• for years: 1992-2002
• brand: Enginetech
• mpn: Et-ecr304
• part type: Rod

seller pistonrinro:

• rating: 100.0%
• city: Ocala, Florida
• # reviews: 24701

offer pistonrinro:

• sold: 0
• options: Ship-to-home
• availability: In Stock
• started: May 27, 2026

general pistonrinro:

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

payments pistonrinro:

• credit card: Discover
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returns pistonrinro:

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

shipping pistonrinro:

• class: Standard
• service: Standard
• cost: $0.00
• transit: 3-9 Days
• type: Fixed

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