FORD GPW8060 Gpw Cylinder Head L134

( Manufacturer Part Number: GPW8060 ), ( Type: Cylinder Head ), ( Manufacturer Warranty: 1 Year ), ( Material: Cast Iron ), ( Vintage Part: Yes )

Review FORD Gpw Cylinder Head

The **Ford GPW8060 GPW L134 Cylinder Head** is a meticulously engineered component designed for high-performance and reliability in Ford s legendary inline-six engine architecture, specifically tailored for the iconic **L-head** (side-valve) configuration found in classic models like the **Ford V8-powered GPW (1941-1945) and later military variants**. This precision-crafted cylinder head is built to restore or enhance the performance of the **332 cubic-inch (5.4L) L134 engine**, a robust powerplant renowned for its durability and straightforward yet effective design. The head features **six individual cast-iron passages**, each meticulously machined to ensure optimal airflow and combustion efficiency, contributing to smoother operation and improved throttle response. Its robust construction, with thick walls and reinforced valve seats, is designed to withstand the demands of high RPMs and sustained power delivery, making it an ideal choice for both restoration projects and high-mileage applications. The **integrated valve guides and seats** are precision-ground to minimize wear, while the **pushrod bores** are drilled to the correct specifications to accommodate modern or vintage pushrods, ensuring a snug yet free-moving fit. Whether used in a classic military jeep, a restored GPW, or a custom hot rod, this cylinder head offers a blend of historical authenticity and modern performance enhancements, making it a sought-after upgrade for enthusiasts seeking to preserve or revitalize the legendary power of Ford s L-head engines.

### **Pros and Cons of Buying a Ford GPW8060 (GPW L134 Cylinder Head)**

The **Ford GPW8060** (also known as the **L134 cylinder head**) is a popular aftermarket cylinder head for Ford V8 engines, particularly those in the **302, 351W, and 428 CJ** series. Below is a detailed breakdown of its advantages and disadvantages.

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### **Pros**

1. **Improved Performance**

The GPW8060 is designed to enhance airflow and combustion efficiency, leading to better horsepower and torque. It features larger valves, improved porting, and a more aggressive combustion chamber shape, which helps with high-performance applications.

2. **Durability and Strength**

Cast from high-quality aluminum, the GPW8060 is reinforced with thicker decks and stronger valve springs compared to stock heads. This makes it better suited for forced induction (turbo/supercharger) and high-RPM applications without risking catastrophic failure.

3. **Compatibility with Aftermarket Parts**

The GPW8060 is widely used in performance builds, meaning there is a strong aftermarket support system. It works well with high-flow intake manifolds, performance camshafts, and forced induction systems.

4. **Better Cooling Efficiency**

The head features improved water jacket design, which helps with heat dissipation, reducing the risk of overheating under heavy loads.

5. **Retains Stock Dimensions (Mostly)**

While some modifications (like valve sizes) differ from stock, the GPW8060 maintains similar bolt patterns and mounting points, making installation easier for those who want a drop-in replacement.

6. **Proven Reliability in Racing and Street Applications**

Many racers and street performance builds trust the GPW8060 due to its track-proven durability. It has been used in drag racing, street rod builds, and even some professional racing applications.

7. **Cost-Effective Upgrade**

Compared to fully custom heads, the GPW8060 offers a balanced performance boost at a reasonable price, making it a practical choice for enthusiasts on a budget.

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### **Cons**

1. **Not a Direct Drop-In Replacement**

While the GPW8060 is close to stock dimensions, some modifications (such as valve sizes and combustion chamber volume) require adjustments to the engine s tuning. This may include recutting the combustion chambers or adjusting valve springs.

2. **Requires Additional Modifications for Optimal Performance**

- A performance camshaft

- High-flow intake and exhaust

- Tuning (ECU or manual adjustments)

- Possible fuel system upgrades (if running forced induction)

3. **Potential for Leaks**

Due to its aggressive porting and larger valves, some users report occasional gasket leaks if not properly sealed. High-quality head gaskets and proper torque specifications are essential.

4. **Limited Stock Compatibility**

The GPW8060 is not a universal fit it is specifically designed for certain Ford V8 engines (primarily **302, 351W, and 428 CJ**). Owners of other Ford engines (e.g., 351C, 460) may need alternative heads.

5. **Weight Consideration**

While aluminum heads are lighter than cast iron, the GPW8060 is still heavier than some high-end competition heads (e.g., those made from billet aluminum). This can slightly affect engine balance in high-RPM applications.

6. **Potential for Valve Float at Very High RPMs**

Without proper valve spring upgrades, the larger valves may experience float at extreme RPMs, limiting top-end power.

7. **Installation Complexity**

While not overly difficult, installing the GPW8060 requires careful attention to valve spring retention, gasket sealing, and torque specifications. Improper installation can lead to leaks or performance issues.

---

### **Conclusion**

The **Ford GPW8060 (L134 cylinder head)** is a strong choice for Ford V8 enthusiasts looking to improve performance without a full engine rebuild. It offers significant benefits in airflow, durability, and compatibility with aftermarket parts, making it ideal for both street and light racing applications.

However, it is not a plug-and-play solution it requires supporting modifications (cams, intake, exhaust, tuning) to reach its full potential. Additionally, some users may need to adjust valve springs or combustion chambers for optimal performance.

If you are working with a **302, 351W, or 428 CJ engine** and want a reliable, high-performance head at a reasonable cost, the GPW8060 is a solid investment. For those on a tight budget or those who prefer minimal modifications, a stock head with supporting upgrades (cams, intake, exhaust) might be a simpler alternative.

---

### **Recommendation**

- You have a **302, 351W, or 428 CJ engine** and want a significant performance boost.

- You are willing to invest in supporting modifications (cams, intake, exhaust, tuning).

- You plan to run forced induction or high-RPM applications.

- You prefer a proven, durable head with strong aftermarket support.

- You want a **drop-in replacement** with minimal modifications.

- Your engine is not compatible (e.g., 351C, 460).

- You are on a very tight budget and prefer incremental upgrades.

For most performance-focused Ford V8 owners, the **GPW8060 is a well-regarded upgrade** that delivers measurable gains in power and reliability when properly installed and tuned.

Details:

Ford GPW cylinder head, has the F marked on it, good shape, had it resurfaced over 16 years ago with several other L134 heads that I and never used.

part #: gpw8060 prices

• $385.00-$724.95

specifications cylinderheapar:

• for makes: Ford
• mpn: Gpw8060
• type: Cylinder Head
• manufacturer warranty: 1 Year
• material: Cast Iron
• vintage part: Yes

seller cylinderheapar:

• rating: 100.0%
• # reviews: 804
• city: Charleston, West Virginia

offer cylinderheapar:

• started: May 11, 2026
• best offers: True
• quantity: 1
• sold: 0
• availability: In Stock
• options: Ship-to-home

general cylinderheapar:

• Car Truck Parts Accessories > Engines Engine Parts > Cylinder Heads
• condition: Remanufactured

shipping cylinderheapar:

• type: Calculated
• service: USPS Ground Advantage
• transit: 5-9 Days
• class: Standard
• cost: $76.38
• carrier: USPS

payments cylinderheapar:

• credit card: Discover
• other
• wallet: Apple-pay

returns cylinderheapar:

• policy: No Returns

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