DODGE TRUCK 306-01429 Cylinder Head 6-239 3.9L

( Brand: Dodge Truck ), ( Part Type: Cylinder Head ), ( Conditions Options: 3.9 ), ( Genuine Oem: Yes ), ( Ipn: 306-01429 )

Review DODGE TRUCK Cylinder Head 3.9l fits DAKOTA 1987–1988

The **Dodge 306-01429 Cylinder Head (6-239, 3.9L, 1987-1988 Dakota)** is a meticulously engineered component designed to deliver peak performance and reliability for the iconic 3.9L Slant-6 engine found in the legendary 1987 and 1988 Dodge Dakota. This high-quality cylinder head is a direct replacement for the original equipment (OEM) part, ensuring an exact fit and seamless integration with the engine bay. Crafted from durable cast iron, this head is built to withstand the demands of daily driving, high-performance applications, and extended use, making it an excellent choice for both restoration projects and performance upgrades. The 6-239 designation indicates its compatibility with the 3.9L Slant-6 engine, which powers the Dakota with its distinctive pushrod design and overhead valve (OHV) architecture. The head features precision-machined combustion chambers, optimized valve seats, and strategically placed spark plug holes to maximize combustion efficiency and engine performance. Whether you're restoring a classic Dakota to its original glory or pushing the limits of a modified engine, this cylinder head provides the structural integrity and thermal management required to maintain optimal engine function. Its robust construction and compatibility with modern fuel systems and emissions standards make it a versatile upgrade for enthusiasts seeking both reliability and performance. With a focus on durability and precision, this part is an essential component for anyone looking to preserve or enhance the legendary driving experience of the 3.9L Slant-6 engine.

### **Pros and Cons of Buying a Used Dodge 306-01429 Cylinder Head (6-239 3.9L, 87-88 Dakota)**

1. **Common and Well-Documented** The 3.9L Magnum engine (6-239) is a well-known design from the late 1970s and 1980s, meaning there is a wealth of repair guides, schematics, and aftermarket parts available. This makes diagnostics and modifications easier compared to rarer engine components.

2. **Aftermarket Support** Since this engine was popular in trucks and SUVs (Dakota, Ram 50, etc.), there are numerous aftermarket cylinder heads, gaskets, valves, and performance parts available. Companies like **Crane, ARP, and Summit Racing** offer compatible upgrades.

- **Porting & Polishing** The stock head can be ported for improved airflow, though results vary based on machining quality.

- **Larger Valves** Upgrading to **2.10" intake and 1.60" exhaust valves** (or larger) can increase horsepower, especially when paired with a high-flow intake manifold.

- **Forced Induction** While not common, a **turbocharger or supercharger** can be installed, though clearance and cooling become concerns.

- **High-Performance Camshafts** Aftermarket cams (e.g., **Comp Cams, Holley**) can improve low-end torque and top-end power.

4. **Durability with Proper Maintenance** If the head is in good condition, it can last indefinitely with regular maintenance, including **valve adjustments, head gasket replacement, and cooling system upkeep**.

5. **Cost-Effective Compared to New** Buying a used head is significantly cheaper than a new OEM part, often costing **$100 $300** depending on condition, whereas a new head from Dodge would be **$500 **.

6. **Compatibility with Other Engines** The 306-01429 head is **identical to the 306-01428** (used in some 1987 1988 models) and can often be swapped with other **3.9L Magnum engines** (e.g., 6-239, 6-239A).

7. **DIY-Friendly** Many repairs (e.g., **valve job, head gasket replacement, porting**) can be done at home with basic tools, reducing labor costs.

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1. **Potential for Internal Damage** If the head was **overheated, cracked, or improperly machined**, it may have **warped decks, burnt valves, or cracked combustion chambers**. Always inspect for:

- **Warpage** (use a straightedge and feeler gauges).

- **Cracks** (magnetic particle inspection or dye penetrant testing).

- **Burnt or pitted valves/seats** (requires grinding or replacement).

- **Leaking oil or coolant** (sign of a bad head gasket or cracked casting).

2. **Head Gasket Failures Are Common** The 3.9L is notorious for **head gasket leaks**, often due to **overheating, poor cooling, or detonation**. If the head has a history of gasket failures, it may require **resurfacing and a new gasket** before installation.

3. **Porting Can Be Hit-or-Miss** While porting can improve airflow, **poor machining** can lead to **uneven ports, sharp edges, or incorrect valve angles**, which may **reduce performance instead of improving it**. Professional porting is recommended if attempting this.

4. **Valvetrain Wear** If the engine was **neglected**, the **pushrods, rocker arms, or lifters** may be worn, requiring replacement before installing a new head.

5. **Cooling System Dependence** The 3.9L is **sensitive to overheating**, especially with forced induction. A **strong cooling system (radiator, thermostat, water pump, hoses)** is essential to prevent head damage.

6. **Limited Stock Performance** The stock head is **not designed for high RPM or heavy loads**. Without modifications, it will **struggle above 3,500 4,000 RPM** and may **detonate** if tuned aggressively.

7. **Finding a Reliable Used Head** Since these parts are **not rare but not always in perfect condition**, you may need to **inspect multiple heads** before finding one that s **warp-free, crack-free, and properly machined**.

8. **Compatibility Issues with Modified Engines** If the engine has been **modified with a different block (e.g., 3.9L with a 4.0L crank or different rod length)**, the head may not fit correctly or may require **custom machining**.

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### **Conclusion & Recommendation**

The **Dodge 306-01429 cylinder head (6-239 3.9L, 87-88 Dakota)** is a **solid choice for DIYers and performance enthusiasts** who are willing to **inspect, maintain, and potentially modify** the component. It offers **good aftermarket support, potential for power gains, and cost savings** compared to new parts.

**However, it requires careful evaluation** **warpage, cracks, and internal damage** can render it unusable unless repaired. If you plan to **port it or run forced induction**, ensure the head is **professionally inspected and machined** to avoid performance losses.

- **If you need a replacement head for a stock or lightly modified engine**, buy a **used head in good condition** (check for warpage, cracks, and valve condition) and **replace the head gasket and valves** if needed.

- **Porting & polishing** (professionally done).

- **Upgrading valves** (2.10" intake, 1.60" exhaust).

- **Installing a high-flow intake manifold** (e.g., **Edelbrock, Holley**).

- **Adding a performance camshaft** (e.g., **Comp Cams 256/256** for a balance of torque and RPM).

- **Avoid buying a head without inspection** many used heads have **hidden damage** that won t be apparent until installed.

- **If you re unsure about machining or modifications**, consult a **local performance shop** before purchasing.

The **306-01429 head is a great value for the right buyer** someone who is **patient, mechanically inclined, and willing to invest time in preparation**. For those who want a **plug-and-play solution**, a **new or remanufactured head** (if available) may be worth the extra cost. For most DIYers, however, a **well-chosen used head with proper modifications** can be a **cost-effective way to improve engine performance**.

Details:

Our hours are. DAKOTA 87-88 6-239 3.9L. In keeping with the P.A.R.T.S. DODGE 150 PICKUP 88 6-239 3.9L.

DODGE 100 PICKUP 88 6-239 3.9L. Mission, Flowers maintains a strong focus on the efficient removal and re-use of automotive parts as well safe disposal inoperable motor vehicles. No expedited shipping options are available at this time. With over 40 acres of cars and light Trucks, totaling 1,000 vehicles 40,000 parts, our Hollander computerized inventory system can always help you find exactly what you re looking for.

part #: 306-01429 prices

• $137.54-$250.00

specifications cylinderheapar:

• for models: Dakota
• for makes: Dodge
• for years: 1987-1988
• brand: Dodge Truck
• part type: Cylinder Head
• conditions options: 3.9
• genuine oem: Yes
• ipn: 306-01429

offer cylinderheapar:

• started: April 14, 2026
• quantity: 1
• options: Ship-to-home
• sold: 0
• availability: In Stock

general cylinderheapar:

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

returns cylinderheapar:

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

shipping cylinderheapar:

• type: Fixed
• transit: 3-8 Days
• service: Standard
• cost: $0.00
• class: Standard

seller cylinderheapar:

• # reviews: 4217
• rating: 99.8%
• city: Smithton, Pennsylvania

payments cylinderheapar:

• wallet: Apple-pay
• other
• credit card: Diners-club

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