1. Engine Crankshafts Products
  2. sku: 19540886322961892
  3. DORMAN OE SOLUTIONS SX-6328

DORMAN OE SOLUTIONS SX-6328 Engine Harmonic Balancer Zk 7.4L V8

fits make: Chevrolet. year: 1973–1974.

Sx-6328 Dorman - Oe Solutions Engine Harmonic Balancer For 1973-1974 Chevrolet C30 Pickup 7.4l V8 Zk

( Brand: Dorman Oe Solutions ), ( Manufacturer Part Number: SX-6328 ), ( Manufacturer Warranty: 1 Year / 2 Years / 3 Years / 5 Years Depending On Part ), ( Item Weight: 15.9100 ), ( Ipn: C667 71-28 ), ( Placement On Vehicle: Engine Cylinder Block ), ( Compatible Model: C30 Pickup ), ( Compatible Year: 1974 1973 ), ( Core Charge: Free No Core Charge ), ( Type: Engine Harmonic Balancer ), ( Fitment Type: Direct Replacement ), ( Bundle Description: 1 Pc Genuine Dorman Engine Harmonic Balancer )

Review DORMAN OE SOLUTIONS Engine Harmonic Balancer Chevrolet Pickup 7.4l V8 Zk fits C30 1973–1974

The **Dorman SX-6328 Engine Harmonic Balancer** is a high-quality, direct-fit replacement designed specifically for the **1973 1974 Chevrolet C30 pickup trucks** equipped with the legendary **7.4L (454 cubic inch) V8 engine**, particularly those featuring the **ZK (Z24) block configuration**. This precision-engineered component is crafted to restore smooth operation to your powerful big-block V8, ensuring optimal vibration damping and longevity for your engine bay. The harmonic balancer plays a critical role in mitigating the torsional vibrations generated by the crankshaft s rotation, preventing excessive wear on the engine s drivetrain components, such as the serpentine belt, pulleys, and even the engine mounts. Constructed from durable **cast iron** with a robust **steel core**, the Dorman SX-6328 is built to withstand the high torque and RPM demands of the 454 V8, delivering reliable performance under heavy loads and sustained high-speed operation. Its **precision-balanced design** ensures minimal vibration transfer to the engine s supporting structures, reducing stress on the entire powertrain while maintaining smooth idle and acceleration. Whether you re restoring a classic C30 to its original glory or upgrading an existing engine, this harmonic balancer is a critical component that enhances both drivability and long-term reliability. Backed by Dorman s reputation for quality and compatibility, this part is a straightforward, bolt-on solution that restores factory-like performance, making it an essential addition for any serious enthusiast or mechanic working on these iconic trucks.

### **Pros and Cons of Buying a Dorman SX-6328 Engine Harmonic Balancer for a 1973-1974 Chevrolet C30 7.4L V8 (ZK)**

#### **Pros:**

1. **Direct Fitment** The Dorman SX-6328 is specifically designed for the 7.4L V8 engine found in the 1973-1974 Chevrolet C30 (ZK series). This ensures compatibility with the crankshaft pulley, bolt pattern, and mounting points without modification.

2. **Improved Vibration Control** A worn or cracked harmonic balancer can cause excessive vibration, which can lead to driveline issues, steering wheel shake, or even engine damage over time. A new Dorman balancer reduces vibration and helps maintain smooth operation.

3. **Durability** Dorman is a well-regarded brand in the aftermarket parts industry, known for producing high-quality, long-lasting components. The SX-6328 is made from durable materials and is designed to withstand the stresses of a heavy-duty V8 engine.

4. **Prevents Further Damage** If the existing balancer is cracked or failing, replacing it early can prevent more costly damage to the crankshaft, flywheel, or transmission mounts.

5. **Easy Installation** The part is designed for straightforward installation, requiring only basic tools. No special equipment or expertise is needed beyond what most mechanics or DIYers possess.

6. **Cost-Effective Solution** Replacing a harmonic balancer is significantly cheaper than dealing with the consequences of a failing one, such as cracked crankshafts or transmission issues.

7. **Warranty Coverage** Dorman parts often come with a warranty (typically 12 months or more), providing peace of mind against premature failure.

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#### **Cons:**

1. **Potential for Counterfeit Parts** As with many aftermarket components, there is a risk of purchasing a fake or low-quality Dorman part. Buying from a reputable dealer or directly from Dorman s authorized distributors minimizes this risk.

2. **Limited Customization** The SX-6328 is a standard replacement part and does not offer performance upgrades or custom tuning options. If you re looking for a heavier or more aggressive balancer, you may need to explore other brands or custom solutions.

3. **Installation Challenges** While generally straightforward, some users may encounter difficulty if the engine bay is cramped or if the old balancer is stubbornly stuck. In rare cases, additional tools (like a puller) may be required.

4. **Compatibility with Modifications** If your engine has been heavily modified (e.g., forced induction, custom crankshafts, or aftermarket flywheels), the stock Dorman balancer may not be ideal. However, for stock or mildly modified engines, it should work fine.

5. **Cost Relative to Other Brands** While Dorman is reliable, some competitors (such as Crane, Moroso, or Melling) may offer similar parts at slightly lower prices. However, quality can vary, so it s important to research thoroughly.

6. **Potential for Over-Tightening** The balancer bolts must be torqued to the manufacturer s specifications. Over-tightening can damage the crankshaft pulley or cause warping, while under-tightening can lead to loosening over time.

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### **Conclusion:**

The **Dorman SX-6328 harmonic balancer** is an excellent choice for a **1973-1974 Chevrolet C30 7.4L V8 (ZK)** if you need a **direct-fit, reliable, and cost-effective replacement** for a worn or failing balancer. It addresses vibration issues, prevents further engine damage, and is backed by a reputable brand. However, it is not a performance part and may not suit heavily modified engines.

If your primary concern is **replacing a damaged balancer** and you want a **trusted, easy-to-install solution**, the Dorman SX-6328 is a strong recommendation. For extra peace of mind, purchase from an **authorized dealer** to avoid counterfeit parts.

### **Final Recommendation:** **Buy the Dorman SX-6328** if:

- Your balancer is cracked, leaking, or vibrating excessively.

- You want a **direct-fit, high-quality replacement** without complex modifications.

- You prefer a **well-supported brand** with warranty coverage.

**Consider alternatives (e.g., Crane or Moroso)** if:

- You find a **slightly cheaper** option with comparable reviews.

- You are unsure about the authenticity of the part and want to cross-reference with other brands.

For most **stock or mildly modified 7.4L V8 applications**, the Dorman SX-6328 is the **best balance of reliability, ease of installation, and cost-effectiveness**.

Details:

Dorman Engine Harmonic Balancer for 1973-1974 Chevrolet C30 Pickup 7.4L V8 zk: Status: In Stock.

part #: sx6328 prices

  • $136.20-$179.51

specifications cranshafengin:

  • for makes: Chevrolet
  • for years: 1973-1974
  • brand: Dorman Oe Solutions
  • mpn: Sx-6328
  • manufacturer warranty: 1 Year / 2 Years / 3 Years / 5 Years Depending On Part
  • item weight: 15.9100
  • ipn: C667 71-28
  • placement on vehicle: Engine Cylinder Block
  • compatible model: C30 Pickup
  • compatible year: 1974 1973
  • core charge: Free No Core Charge
  • type: Engine Harmonic Balancer
  • fitment type: Direct Replacement
  • bundle description: 1 Pc Genuine Dorman Engine Harmonic Balancer

general cranshafengin:

  • Car Truck Parts Accessories > Engines Engine Parts > Crankshafts
  • condition: New

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offer cranshafengin:

  • sold: 0
  • quantity: 2
  • availability: In Stock
  • options: Ship-to-home
  • started: March 28, 2026

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  • city: Indianapolis, Indiana
  • # reviews: 638376
  • rating: 99.6%

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for makes: chevrolet, for years: 1973-1974, manufacturer warranty: 1 year / 2 years / 3 years / 5 years depending on part, item weight: 15.9100, placement on vehicle: engine cylinder block, compatible model: c30 pickup, compatible year: 1974 1973, core charge: free no core charge, type: engine harmonic balancer, fitment type: direct replacement, bundle description: 1 pc genuine dorman engine harmonic balancer,
category: auto parts > car truck parts accessories > engines engine parts > crankshafts, sku: 19540886322961892,
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