JEGS 60328 Performance Transmission 889944061168 4L80E

( Brand: Jegs ), ( Manufacturer Part Number: 60328 ), ( Part Type: Transmission ), ( Country Of Origin: Usa ), ( UPC: 889944061168 )

Review JEGS Performance Transmission Chevy fits 4WD 1997–1999

The **60328 4L80E Performance Transmission** is a meticulously engineered, high-performance upgrade designed specifically for the **1997 1999 Chevrolet 4WD vehicles**, including models like the Silverado, Suburban, Tahoe, and GMC Sierra/Yukon. This transmission is a direct replacement for the stock **4L80E**, but with significant enhancements that elevate both durability and performance, making it an ideal choice for towing, hauling, or off-road applications where stock transmissions often fall short. Built with **heavy-duty components**, including a **reinforced torque converter** with a larger capacity for better stall speed and smoother engagement, this transmission delivers improved power transfer and reduced heat buildup, even under the most demanding conditions. The **clutch packs** are upgraded with **high-friction material**, ensuring stronger engagement and longer-lasting wear, while the **valve body** features precision-machined passages for optimized hydraulic performance, resulting in quicker shifts and reduced shift shock. The **case** itself is constructed from **high-strength cast iron**, reinforced with additional gussets and a **thicker oil pan** to enhance structural integrity and prevent warping, which is a common issue in stock transmissions under heavy loads. This transmission also incorporates a **performance valve body** with adjustable shift points, allowing for customizable shift behavior whether you prefer quicker shifts for towing or smoother transitions for daily driving. Additionally, the **seals and bearings** are upgraded to industrial-grade specifications, reducing internal friction and extending the transmission s lifespan. Whether you re pushing a heavy load, navigating rough terrain, or simply seeking a more robust and reliable drivetrain, the **60328 4L80E Performance Transmission** delivers the strength, responsiveness, and longevity required to meet the demands of modern 4WD applications. Backed by rigorous testing and built to exceed factory specifications, this transmission is a premium investment for those who demand nothing less than peak performance from their Chevrolet 4WD.

### Pros and Cons of Buying a 60328 4L80E Performance Transmission for a 1997 1999 Chevy 4WD

#### **Pros**

1. **Enhanced Performance** The 60328 4L80E is a high-performance variant of the 4L80E, featuring upgraded internal components like a stronger torque converter, reinforced clutch packs, and improved valve body solenoids. This results in quicker shifts, better torque handling, and improved durability under heavy loads, making it ideal for towing, hauling, or high-performance applications.

2. **Better Towing and Hauling Capability** The transmission is designed to handle higher torque loads, which is beneficial for trucks equipped with powerful engines (e.g., LS1, big-block V8s, or turbocharged setups). It reduces the risk of slippage or premature wear compared to stock 4L80Es.

3. **Compatibility with Modifications** If you ve modified your engine (e.g., forced induction, supercharger, or high-torque builds), the 60328 is a more robust choice than the stock transmission, which may struggle with excessive power.

4. **Aftermarket Support** The 60328 is widely available from reputable transmission builders (e.g., Jegs, Summit Racing, or specialty shops). There are also performance clutch kits, valve body upgrades, and tuning options to further optimize its performance.

5. **Long-Term Durability** With proper maintenance (fluid changes, clutch adjustments, and cooling), the 60328 can last significantly longer than a stock 4L80E, especially in demanding applications.

6. **Resale Value for Performance Builds** If you plan to keep the truck for performance or towing, a 60328 adds value compared to a stock transmission.

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#### **Cons**

1. **Higher Cost** A 60328 4L80E will cost significantly more than a stock 4L80E, often ranging between **$1,500 $3,000 **, depending on the source and condition. This can be a substantial investment if you don t need the extra performance.

2. **Potential Overkill for Stock Applications** If your truck is running a stock engine (e.g., 5.3L V8 with no modifications), the 60328 may not offer noticeable benefits over a stock transmission. The extra cost may not be justified unless you plan future power increases.

3. **Installation Complexity** Swapping a transmission requires removing the engine/transmission assembly, which is labor-intensive. If you re not experienced with engine work, you may need to pay a mechanic for installation, adding to the cost.

4. **Maintenance Requirements** While more durable, the 60328 still requires **regular fluid changes (every 30K 50K miles)** and clutch adjustments. Neglecting maintenance can lead to premature failure, just like any transmission.

5. **Potential for Overheating** The 4L80E family is known for overheating, especially in stop-and-go traffic or heavy-duty applications. The 60328 helps but doesn t eliminate the need for a **cooling system upgrade** (e.g., transmission cooler, extended cooler lines, or a larger radiator).

6. **Limited Stock Availability** Unlike the stock 4L80E, which is still produced for OEM use, the 60328 is primarily an aftermarket part. This means you may have to order it, and lead times can vary.

7. **Possible Compatibility Issues** While the 60328 is designed for GM 4L80E applications, some builds (especially with extreme modifications) may require additional tuning or supporting upgrades (e.g., flywheel, flexplate, or drivetrain components).

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### **Conclusion**

The **60328 4L80E performance transmission is a strong choice** if you re running a **modified or high-torque engine** in your 1997 1999 Chevy 4WD and need a transmission that can handle the power without slipping or failing. It offers **better shift quality, durability, and towing capability** compared to a stock unit, making it worth the investment for serious builders.

However, if your truck is **stock or lightly modified**, the extra cost may not be justified. In that case, a **well-maintained stock 4L80E** (with a transmission cooler and proper fluid) could suffice. Additionally, if you re on a tight budget, consider **upgrading only critical components** (e.g., clutch kit, valve body, or cooler) instead of a full transmission swap.

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### **Recommendation**

- You re running **250 hp or higher torque** (especially with forced induction or big-block engines).

- You frequently **tow heavy loads** or haul heavy payloads.

- You plan to **modify your engine in the future** and want a transmission that can handle it.

- You want **quicker, smoother shifts** and don t mind paying for performance.

- Your truck is **stock or lightly modified** (under 250 hp).

- You re on a **tight budget** and don t need the extra performance.

- You re willing to **maintain the stock transmission well** (fluid changes, cooler, clutch adjustments).

For the best value, **pair the 60328 with a transmission cooler, extended cooler lines, and a high-quality fluid** (e.g., Mopar ATF 4 or a performance fluid like Lucas Red Line). If you re unsure, consult a **transmission specialist** before purchasing to ensure compatibility with your specific build.

Details:

part #: 60328 prices

• $2625.39-$3199.99

specifications autotransmissionsgo:

• for models: 4wd
• for makes: Chevy
• for years: 1997-1999
• brand: Jegs
• mpn: 60328
• part type: Transmission
• country of origin: Usa
• upc: 889944061168

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• other
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• cost: $0.00
• type: Fixed
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offer autotransmissionsgo:

• availability: In Stock
• quantity: 1
• sold: 0
• options: Ship-to-home
• started: May 24, 2026

seller autotransmissionsgo:

• rating: 99.5%
• # reviews: 631706
• city: , Ohio

general autotransmissionsgo:

• condition: New
• Car Truck Parts Accessories > Transmission Drivetrain > Automatic Transmission

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