MOPAR Block Cylinder Heads 3161857.

( Manufacturer Part Number: 3161857 ), ( Type: Cylinder Head ), ( Manufacturer Warranty: 1 Year ), ( Material: Cast Iron ), ( Vintage Part: Yes ), ( Country Of Origin: United States ), ( 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 MOPAR Small Block Cylinder Heads fits 360 1971

The **Mopar 3161857 1971 360 Small-Block Ford (SBF) Cylinder Head Assembly** represents a meticulously crafted, high-performance component designed for enthusiasts seeking to restore or enhance the power and reliability of their classic 360-cubic-inch V8 engines. Originally engineered for the legendary **360 Ford V8**, which powered everything from muscle cars like the **Fairlane Thunderbolt** and **Mustang Boss 302** to high-performance applications in the **Ford GT40** and **Ford Racing** programs, these heads are built to deliver a perfect blend of durability and performance. Crafted from **high-grade cast iron**, these heads feature a **four-valve-per-cylinder design** with **1.94-inch intake valves** and **1.48-inch exhaust valves**, allowing for optimized airflow and improved combustion efficiency. The **pushrod-operated rocker arm system** ensures smooth valve operation, while the **integrated valve springs and retainers** provide reliable sealing and prevent valve float under high RPM conditions. The **cast-in combustion chambers** are precisely machined to promote efficient fuel-air mixture ignition, contributing to a stronger, more responsive engine. For those looking to push their 360 further, these heads are often paired with **high-flow intake and exhaust manifolds**, **performance camshafts**, and **forged internals** to unlock serious horsepower while maintaining the classic Ford V8 s legendary reliability. Whether restoring a vintage muscle car to its original glory or building a modern high-performance engine, these **Mopar 3161857 cylinder heads** offer a perfect balance of authenticity, strength, and performance making them an essential component for any Ford 360 enthusiast.

**Pros and Cons of Buying a 1971 Mopar 3161857 360 Block Cylinder Head**

The 3161857 cylinder head is part of the 360 cubic inch V8 engine family produced by Chrysler (Mopar) in the early 1970s. These heads are still sought after by enthusiasts for restoration, modification, or replacement in classic cars. Below is a detailed breakdown of their advantages and disadvantages.

---

### **Pros**

1. **Proven Reliability and Performance**

The 360 big-block engine, particularly the 318 and 360 variants, is known for its durability and strong power output when properly maintained. The cylinder heads are designed for high compression and can be tuned for significant horsepower gains with modifications like porting, larger valves, or high-performance camshafts.

2. **Widespread Availability of Parts and Support**

As a classic Mopar engine, the 360 block and its components have been around for decades. There is a large community of enthusiasts, aftermarket support, and readily available parts, including gaskets, valves, springs, and even complete rebuilt heads. This makes repairs and modifications easier compared to less common engines.

3. **Compatibility with Modifications**

- **Porting and polishing** to improve airflow.

- **Larger valves** (e.g., 2.19" intake and 1.70" exhaust) for increased displacement and performance.

- **High-performance cams** to enhance low-end torque and top-end power.

- **Aftermarket springs and retainers** for better valve control under heavy loads.

- **Fuel injection or high-flow carburetion** for modernized fueling systems.

This flexibility makes the heads suitable for both street and mild performance applications.

4. **Cost-Effective for Restoration**

Compared to modern high-performance heads or rare vintage heads, the 3161857 heads are relatively affordable, especially if purchased used or from a salvage yard. Restoring or rebuilding them can be cost-effective if done carefully, as many parts are interchangeable with other 360 heads.

5. **Classic Car Appeal**

For owners of classic Mopar vehicles (e.g., Challenger, Charger, Barracuda, or Dart), original or restored 360 heads contribute to the engine s vintage character and authenticity. They are also desirable for collectors and show cars.

6. **Easy to Work On**

The design is straightforward, with accessible components like rocker arms, pushrods, and valves. This makes DIY maintenance and tuning feasible for those with basic mechanical skills.

7. **Potential for High Horsepower with Proper Tuning**

With the right modifications (e.g., forced induction, high-flow intake manifolds, and tuned ignition), the 360 can produce impressive power outputs. Many examples have been built to exceed 400 horsepower with stock displacement, making them attractive for performance builds.

---

### **Cons**

1. **Age-Related Wear and Potential Issues**

- **Warped or cracked decks** due to overheating or poor maintenance.

- **Worn valve guides or seats**, leading to leaks or poor sealing.

- **Threaded holes stripped** from improper torque or aftermarket modifications.

- **Corrosion or pitting** in the combustion chambers or ports, which can reduce performance.

Inspection and testing (e.g., pressure testing, deck checking) are essential before purchase.

2. **Requires Rebuilding or Restoration**

- **Machining the decks** to ensure flatness.

- **Replacing gaskets, seals, and bolts** (often with modern equivalents like ARP or high-strength bolts).

- **Valvetrain upgrades** (e.g., new springs, retainers, and rocker arms).

- **Port cleaning or porting** to restore airflow.

Rebuilding can be labor-intensive and may require specialized tools or a machine shop.

3. **Emissions and Modern Compliance**

The 360 heads were designed for carbureted fueling and do not meet modern emissions standards. If the engine is intended for a modern vehicle or a state with strict emissions laws, modifications like:

- **Swapping to fuel injection** (e.g., Holley EFI, Edelbrock E-Tech).

- **Installing an EGR delete or catalytic converter bypass** (if applicable).

- **Using modern ignition systems** (e.g., MSD, AEM).

will be necessary, adding complexity and cost.

4. **Limited Stock Displacement Power**

While the 360 is a strong engine, its stock configuration (with stock heads and carburetion) is not as powerful as modern high-performance engines. For serious high-horsepower applications, forced induction (turbocharging or supercharging) or significant displacement increases (e.g., 383 or 400 big-block swaps) may be more practical.

5. **Risk of Incompatibility with Modern Vehicles**

- **Electrical compatibility** (e.g., wiring for modern ignition or fuel systems).

- **Mounting or alignment** with modern engine bay layouts.

- **Coolant or oil system differences** (e.g., modern thermostats, oil pumps).

may arise, requiring additional modifications.

6. **Depreciation and Market Fluctuations**

Like all classic parts, the value of these heads can fluctuate based on demand, rarity, and condition. While they are not extremely rare, prices may vary significantly depending on whether they are original, rebuilt, or aftermarket replicas.

7. **Potential for Overmodification**

The 360 heads are capable of handling significant power, but overmodifying them (e.g., aggressive porting without corresponding valve upgrades, oversized valves without proper support) can lead to reliability issues like valve float, excessive heat, or catastrophic failure. Proper engineering and testing are critical.

---

### **Conclusion**

The 1971 Mopar 3161857 360 block cylinder heads are a solid choice for enthusiasts looking to restore, modify, or replace heads in a classic Mopar V8. They offer a balance of performance potential, availability of parts, and compatibility with a wide range of modifications. However, they also come with challenges related to age, maintenance requirements, and the need for modern compliance if used in contemporary vehicles.

For **restoration projects, classic car enthusiasts, or mild performance builds**, these heads are an excellent and cost-effective option. They can be easily rebuilt, tuned, and integrated into a variety of applications with the right approach.

For **high-performance or modern applications**, additional considerations (such as forced induction, fueling upgrades, or compatibility with modern systems) may be necessary, adding complexity but also unlocking greater power potential.

---

### **Recommendation**

Purchase a set of **rebuilt or inspected heads** from a reputable source (e.g., a trusted machine shop, eBay seller with good reviews, or a parts swap meet). Prioritize heads with:

- Flat, machined decks.

- New valve guides, seats, and springs.

- Clean ports and combustion chambers.

Pair them with a **high-quality intake manifold** (e.g., Edelbrock Performer or Holley), a **performance carburetor** (e.g., Holley 4150 or Edelbrock Victor), and a **modern ignition system** (e.g., MSD or AEM) for reliability and performance.

- **Larger valves** (e.g., 2.19" intake, 1.70" exhaust) for increased airflow.

- **Port matching** to the intake manifold for optimal airflow.

- **High-lift cams** and **aftermarket valvetrain components** (e.g., Isky or JE rocker arms).

- **Fuel injection** (e.g., Holley EFI or Edelbrock E-Tech) for precise fueling and power gains.

For serious power (e.g., 400 horsepower), pair the heads with a **turbocharger or supercharger** and a **tuned engine management system**.

Have them **pressure tested** and **deck checked** before purchasing. If they show signs of warping, cracking, or excessive wear, factor in the cost of rebuilding or replacement.

Be prepared to address **electrical, fueling, and emissions compatibility** issues. Consult with a Mopar specialist or performance shop to ensure the heads integrate smoothly with the rest of the engine bay.

In summary, the 3161857 heads are a **great investment for classic car lovers and performance enthusiasts** who are willing to put in the work to restore or modify them. With proper care and upgrades, they can provide decades of reliable service and strong performance.

Details:

1971 360 Small Block Mopar Cylinder Heads.

part #: 3161857 price

• $100.00

specifications cylinderheapar:

• for models: 360
• for makes: Mopar
• for years: 1971
• mpn: 3161857
• type: Cylinder Head
• manufacturer warranty: 1 Year
• material: Cast Iron
• vintage part: Yes
• country of origin: United States
• california prop 65 warning: This Product May Contain Chemicals Known To The State Of California To Cause Cancer, Birth Defects, Or Other Reproductive Harm.

payments cylinderheapar:

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

offer cylinderheapar:

• options: Ship-to-home
• best offers: True
• sold: 0
• quantity: 1
• availability: In Stock
• started: May 22, 2026

shipping cylinderheapar:

• class: Standard
• transit: 5-11 Days
• type: Calculated
• cost: $92.00
• carrier: USPS
• service: USPS Ground Advantage

seller cylinderheapar:

• rating: 80.0%
• city: Washington, Missouri
• # reviews: 3

general cylinderheapar:

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

returns cylinderheapar:

• policy: No Returns

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