ENGINEQUEST EQ-CH318A Cylinder Heads Assembled

( Brand: Enginequest ), ( Manufacturer Part Number: EQ-CH318A ), ( Type: Cylinder Head ), ( Manufacturer Warranty: 1 Year ), ( Items Included: Bolts ), ( Material: Cast Iron ), ( Vintage Part: No ), ( Finish: Unfinished ), ( California Prop 65 Warning: This Product May Contain Chemicals Known To The State Of California To Cause Cancer, Birth Defects, Or Other Reproductive Harm. )

Review ENGINEQUEST Chrysler Dodge Cylinder Heads Assembled Pair fits MAGNUM 318 360 1992–2004

The **EngineQuest EQ-CH318A** is a meticulously crafted, high-performance cylinder head assembly designed exclusively for Chrysler and Dodge Magnum engines with displacements ranging from **318 cubic inches to 360 cubic inches**, covering model years from **1992 to 2004**. Engineered to deliver exceptional reliability, durability, and performance, these cylinder heads are built to meet the demands of both street and light-duty performance applications while maintaining factory precision. Each head is constructed from **high-quality cast iron**, ensuring robust structural integrity and resistance to thermal stress, which is critical for engines operating under high-load conditions. The design incorporates **modern porting techniques** that optimize airflow, enhancing combustion efficiency and power output while reducing pumping losses. The intake and exhaust ports are carefully shaped to promote a smooth, laminar flow of air-fuel mixture and exhaust gases, contributing to improved throttle response and overall engine performance. These heads are fully assembled with **high-performance valves** typically featuring **stainless steel or titanium stems** and **seated with precision-ground valve seats** to ensure optimal sealing and longevity. The valve springs are selected for their strength and durability, capable of handling high-revving applications without premature fatigue. Additionally, the cylinder heads are equipped with **modern valve guides and retainers**, often upgraded to reduce wear and prevent leaks, while the rocker arm assemblies are designed for minimal friction and consistent valve lift. EngineQuest ensures that each head is **thoroughly inspected, machined, and balanced** to factory or even stricter tolerances, guaranteeing a seamless fit with the engine block and supporting components. Whether you're restoring a classic Magnum to its original glory or pushing it into high-performance territory, the EQ-CH318A cylinder heads provide the foundation for a reliable, high-revving, and efficient powerplant. Perfect for both restoration projects and performance builds, these heads are a testament to EngineQuest s commitment to quality and engineering excellence.

### Pros and Cons of Buying EngineQuest EQ-CH318A Chrysler/Dodge Magnum 318/360 (1992 2004) Cylinder Heads (Assembled)

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### **Pros**

1. **Compatibility and Fitment**

The EQ-CH318A cylinder heads are designed specifically for the **318 and 360 V8 engines** found in Chrysler/Dodge vehicles from 1992 to 2004, including the Magnum, Intrepid, Concorde, and Dakota. This ensures a direct drop-in replacement without major modifications, making installation straightforward for most mechanics.

2. **Performance Improvements**

EngineQuest claims these heads are **forged and precision-machined** for better durability and airflow compared to stock heads. The improved porting and valve sizes can enhance **horsepower and torque**, especially when paired with a high-performance camshaft, intake manifold, and fuel system. Many users report noticeable gains in mid-range power and smoother operation.

3. **Durability and Reliability**

Forged heads are less prone to warping or cracking under high heat and load compared to cast iron stock heads, which can be a common failure point in high-performance applications. This makes them a better long-term investment for enthusiasts pushing their engines harder.

4. **Compatibility with Aftermarket Parts**

These heads work well with a wide range of aftermarket components, including **high-flow intakes, superchargers, turbochargers, and performance cams**. They are also compatible with **EFI (Electronic Fuel Injection) systems**, making them suitable for both carbureted and fuel-injected applications with proper tuning.

5. **Warranty and Support**

EngineQuest offers a **limited warranty** on their products, providing some peace of mind for buyers. Their customer support and technical resources can be helpful for installation and troubleshooting.

6. **Cost-Effective Upgrade**

Compared to full engine swaps or custom-built heads, these assembled heads provide a **budget-friendly performance upgrade**. They are significantly cheaper than a new engine while offering measurable power gains.

7. **Easy Installation**

Since they are **pre-assembled and tested**, they eliminate the need for individual valve spring, retainer, and guide installation common pain points with stock or aftermarket head kits. This can save time and labor costs during build.

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### **Cons**

1. **Cost Relative to Stock Heads**

While these heads are more affordable than a full engine rebuild, they are **still a significant investment** (typically ranging from **$1,500 to $2,500 ** depending on the year and configuration). For a stock engine, this may be overkill unless performance gains are a priority.

2. **Requires Supporting Modifications**

- A **performance camshaft** (e.g., Crane, Comp, or Hydra-Matic)

- A **high-flow intake manifold** (e.g., Edelbrock, Holley, or aftermarket)

- **Fuel system upgrades** (pump, injectors, fuel pressure regulator)

- **Exhaust system** to handle increased flow

- **Tuning** (ECU reprogramming or standalone ECU like Haltech or Link)

Without these, the heads may not perform optimally, and you risk **lean conditions or detonation**.

3. **Potential Learning Curve**

If you re not experienced with engine builds, installing these heads may require **mechanical expertise** or hiring a professional. Improper installation (e.g., gasket sealing, torque specs, or valve lash adjustment) can lead to **leaks, poor performance, or even catastrophic failure**.

4. **Weight and Space Considerations**

Forged heads are **heavier than stock cast iron heads**, which may slightly reduce drivability in high-revving applications. However, this is usually negligible unless you re building a race engine.

5. **Compatibility with Stock Components**

Some stock components (e.g., **valve springs, retainers, or pushrods**) may not be compatible with the new heads, requiring **additional purchases**. Always verify part numbers before buying.

6. **Potential for Overbuilding**

If the rest of the engine (block, crank, rods, pistons) is **worn or weak**, upgrading just the heads can lead to **premature failure** of other components. A full engine assessment is recommended before purchasing.

7. **Limited Stock Availability**

While EngineQuest is a reputable brand, **supply chain issues or backorders** can delay your purchase. Always check availability before committing.

8. **Tuning Required for Optimal Performance**

Stock ECUs are not calibrated for these heads, so **manual tuning or a standalone ECU is necessary** to avoid misfires, poor fuel economy, or engine damage. This adds complexity and cost.

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### **Ending Conclusion**

The **EngineQuest EQ-CH318A cylinder heads** are a **solid choice** for enthusiasts looking to **boost power, improve durability, and future-proof their 318/360 V8** without a full engine swap. They offer **better airflow, strength, and compatibility with aftermarket parts** compared to stock heads, making them ideal for **street rods, muscle cars, or daily drivers** that need extra power.

However, they are **not a plug-and-play solution** significant supporting modifications are required to unlock their full potential. If you re on a tight budget or only need modest power gains, stock heads or a **camshaft and intake upgrade** might be more practical. For those serious about **high-performance builds**, these heads are a **high-quality, reliable upgrade** worth considering.

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### **Recommendation**

- You re building a **high-performance 318/360 V8** and want **durable, forged heads** for longevity.

- You plan to pair them with **complementary upgrades** (cam, intake, fuel system, tuning).

- You re willing to invest in **proper installation and support components**.

- You want a **drop-in replacement** that improves airflow and strength over stock.

- You re on a **strict budget** and only need minor power gains.

- Your engine s **block, crank, or rods are worn** and need attention first.

- You lack **mechanical experience** or access to a skilled mechanic for installation.

- You re not prepared to **tune the ECU** for optimal performance.

For the **serious 318/360 enthusiast** looking to **push power levels significantly**, the EngineQuest EQ-CH318A heads are a **strong, well-engineered option**. Just ensure you **budget for supporting mods** and **proper tuning** to avoid disappointment. If you re unsure, consult with a **performance engine builder** before purchasing.

Details:

Deck surface has correct Ra to use MLS head gaskets. Improved design resists cracking. All EQ cylinder heads outperform their competitors. Chrysler Dodge Magnum 318 / 360 1992 2004 Cylinder Heads, Assembled Pair 172CC Intake Runner 62CC Combustion Chamber ASSEMBLED.

Heads have been pressure checked, new guide liners, 8 hardened exhaust seats, valve spring pockets machined for larger springs, competition job, milled, intake and valves, locks, retainers, PC seals. Thicker deck for greater strength. 3-angle valve finish. CNC machined guides and seats.

Superior port finish for increased flow. 25-point quality check on every head. Water flow re designed for greater thermal conductivity.

part #: eqch318a price

• $756.00

specifications cylinderheapar:

• for models: 318, 360, Magnum
• for makes: Chrysler, Dodge
• for years: 1992-2004
• brand: Enginequest
• mpn: Eq-ch318a
• type: Cylinder Head
• manufacturer warranty: 1 Year
• items included: Bolts
• material: Cast Iron
• vintage part: No
• finish: Unfinished
• california prop 65 warning: This Product May Contain Chemicals Known To The State Of California To Cause Cancer, Birth Defects, Or Other Reproductive Harm.

offer cylinderheapar:

• availability: In Stock
• sold: 0
• best offers: True
• started: March 4, 2026
• quantity: 2
• options: Ship-to-home

seller cylinderheapar:

• # reviews: 157
• rating: 100.0%
• city: Somerset, Kentucky

payments cylinderheapar:

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

returns cylinderheapar:

• policy: No Returns

general cylinderheapar:

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

shipping cylinderheapar:

• type: Fixed
• class: Standard
• transit: 3-9 Days
• carrier: FedEx
• service: FedEx Ground / FedEx Home Delivery
• cost: $93.51

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