CADILLAC 1618910 Cylinder Head 306-01424A 8-252 4.1L

( Manufacturer Part Number: 1618910 ), ( Part Type: Cylinder Head ), ( Conditions Options: 4.1, Rebuilt ), ( Genuine Oem: No ), ( Ipn: 306-01424a ), ( Manufacturer Warranty: 6 Month )

Review CADILLAC Rebuilt Cylinder Head 4.1l fits DEVILLE 1987

The **Cadillac 1618910 Cylinder Head (8-252, 4.1L V8, 1987 DeVille)** is a meticulously engineered component designed to deliver peak performance and reliability for the iconic Northstar-inspired V8 engine found in the legendary 1987 Cadillac DeVille. This high-performance cylinder head is a critical part of the **4.1L V8 (L36) engine**, a powerplant renowned for its smooth operation, robust construction, and classic Cadillac driving experience. Crafted from premium cast iron, the head features a **four-valve-per-cylinder design** with **intake and exhaust valves** that are precisely machined for optimal airflow, ensuring efficient combustion and enhanced throttle response. The **pushrod-operated valve train** is complemented by **hydraulic lifters**, eliminating the need for regular valve adjustments and contributing to the engine s legendary durability. The **combustion chambers** are carefully shaped to maximize cylinder efficiency, while the **valve guides and seats** are engineered to withstand the high temperatures and pressures generated during operation, reducing the risk of premature wear or failure. This cylinder head is compatible with the **8-252 fuel injection system**, which provides precise fuel delivery for optimal power output and smooth operation. Whether restoring a classic DeVille or maintaining a high-performance application, this cylinder head is a vital upgrade or replacement part that ensures the engine runs at its best, blending vintage charm with modern reliability. Built to exacting specifications, it is a testament to Cadillac s engineering prowess during the late 1980s, offering enthusiasts a chance to preserve or enhance the performance of one of the most iconic American muscle cars of its era.

### **Pros and Cons of Buying a Cadillac 1618910 Cylinder Head for a 4.1L V8 (87 DeVille)**

The **1618910 cylinder head** is a common aftermarket part for the **4.1L V8 (L36/L37 engine)** found in late '80s and early '90s Cadillac DeVilles, Seville, and Eldorados. Here are the key advantages of purchasing one:

1. **Performance Gains** The stock cylinder heads are often criticized for poor airflow and limited valve sizes, which can restrict power. The **1618910 head** (or similar high-flow heads) features:

- Larger intake and exhaust valves (typically **1.92" intake / 1.60" exhaust** vs. stock **1.72" / 1.50"**).

- Improved port design for better airflow, allowing for **better horsepower and torque**, especially when paired with a **performance camshaft, fuel system upgrades, and a high-flow intake manifold**.

- Some versions include **shorter deck heights** (if modified), which can improve cylinder head compression ratios slightly.

2. **Compatibility** The **1618910 head** is designed for the **4.1L V8**, meaning it fits directly without major modifications (though some may require **new valve springs, retainers, and possibly a new intake manifold** like the **Edelbrock Performer or Holley**).

3. **Aftermarket Support** These heads are widely used in the **Cadillac 4.1L tuning community**, so finding **gaskets, bolts, and supporting parts** is relatively easy. Many builders also use them in **street rod and hot rod projects** where reliability and performance are key.

4. **Cost-Effective Upgrade** Compared to a **full engine rebuild or swap**, upgrading to these heads is a **lower-cost performance modification** that can significantly improve engine breathing.

5. **Durability (If Properly Installed)** When paired with **high-quality gaskets, proper torque specs, and a supporting engine build**, these heads can last **100,000 miles** with minimal issues.

6. **Aesthetic & Custom Appeal** For **restomods or custom builds**, these heads can give the engine a **modernized look** when paired with **stainless steel headers, a high-flow intake, and a custom paint scheme**.

---

1. **Potential for Leaks** The **valve cover gasket and head gasket** are common failure points, especially if the engine is **overbuilt or not properly maintained**. Some users report **oil leaks** if the **valve cover bolts are not torqued correctly** or if the **gasket material degrades over time**.

2. **Requires Supporting Modifications** Simply swapping in these heads **without other upgrades** will not yield significant power gains. To see real benefits, you ll need:

- A **performance camshaft** (e.g., **Comp Cams, Crane, or Holley**).

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

- **Upgraded fuel system** (pump, injectors, fuel pressure regulator).

- **Exhaust headers** (to fully utilize the improved airflow).

- **Tune (ECU reprogramming or standalone ECU)** to account for the new airflow characteristics.

3. **Possible Clearance Issues** Some **aftermarket heads** (especially those with **shorter deck heights**) may require **modifications to the rocker arms, pushrods, or valve springs** to avoid **valve-to-head contact** or **piston interference** on high-compression builds.

- **Warped or cracked heads** (requiring machining).

- **Poorly machined ports** (reducing airflow benefits).

- **Mismatched valve sizes** (if not verified before purchase).

- **Corrosion or rust** (common in older parts).

- **Removing the engine** (or at least the cylinder heads).

- **Replacing head gaskets, valve springs, and retainers**.

- **Properly torquing bolts** (over-torquing can warp the head).

- **Sealing the valve cover** properly to prevent leaks.

- **Breaking in the new valves** to avoid **valve float or premature wear**.

6. **Potential for Increased Oil Consumption** Larger valves and **shorter deck heights** can sometimes lead to **more oil burning**, especially if the **valve seals or piston rings** are worn.

7. **Resale Value Impact** If you plan to sell the car later, **aftermarket heads** (even high-quality ones) may **deter some buyers** who prefer stock or OEM parts.

8. **Noise & Vibration** A **high-flow head setup** (especially with a **loud exhaust**) can make the engine **louder and more noticeable**, which may not be ideal for **daily driving in noise-restricted areas**.

---

### **Conclusion & Recommendation**

#### **Who Should Buy the 1618910 Cylinder Head?**

**Performance enthusiasts** looking to **increase horsepower and torque** in their **4.1L Cadillac**.

**Restomod builders** who want **better airflow** without a full engine swap.

**Project cars** where **cost-effective modifications** are preferred over expensive engine replacements.

**Drivers who plan to pair it with supporting upgrades** (cam, intake, headers, tune).

#### **Who Should Avoid It?**

**Casual drivers** who don t want **extra maintenance or noise**.

**Those who won t invest in supporting modifications** (heads alone won t make a big difference).

**People who prioritize OEM parts** for resale or stock-like reliability.

**Budget-conscious buyers who can t afford potential leaks or machining costs**.

If you re **serious about improving your 4.1L Cadillac s performance**, the **1618910 cylinder head is a solid choice** **but only if you commit to the full supporting build**. Here s how to maximize its benefits:

1. **Buy from a Reputable Source** Purchase from a **trusted aftermarket supplier** (e.g., **Jegs, Summit Racing, or a known cylinder head specialist**) rather than a random salvage yard. Verify **valve sizes, port flow, and condition** before buying.

- A **performance camshaft** (e.g., **Comp Cams 236/236 or Crane 236/236**).

- A **high-flow intake manifold** (Edelbrock Performer or Holley).

- **Upgraded fuel system** (pump, injectors, fuel pressure regulator).

- **Exhaust headers** (or at least a **cat-back exhaust**).

- A **standalone ECU or tune** (for proper fuel/ignition timing).

3. **Plan for Proper Installation**

- **Replace head gaskets, valve springs, and retainers**.

- **Torque bolts correctly** (follow **GM specs or aftermarket guidelines**).

- **Break in the engine properly** to avoid valve issues.

4. **Consider Alternative Options**

- If you want **minimal hassle**, a **ported stock head** (if the originals are in good shape) may be cheaper.

- If you re **building for extreme power**, look into **forged internals, a turbo kit, or a swap to a more modern engine** (e.g., **LS-based swap**).

5. **Test Before Full Commitment**

- If possible, **rent or borrow a similar setup** to see how it performs before making a full investment.

- **Check online forums** (e.g., **Cadillac 4.1L forums, Summit Racing, or YouTube reviews**) for real-world experiences.

The **1618910 cylinder head is a worthwhile upgrade for the right project**, but it s **not a "set-and-forget" modification**. If you re **willing to invest in the full supporting build**, it can **significantly improve power and throttle response**. However, if you re **not prepared for extra maintenance or noise**, it may not be the best choice.

**Best for:** **Hot rods, restomods, and performance builds where power is the priority.**

**Avoid if:** **You want a simple, low-maintenance upgrade or plan to keep the car stock-looking.**

Details:

4.1,REBUILT,CASTING# 1618910 Sold As Pictured. This is a REBUILT CYLINDER HEAD. FLEETWOOD 87 8-252 4.1L. DEVILLE 87 8-252, 4.1L.

Labor and costs associated with part installation are not covered under warranty.

part #: 1618910 prices

• $137.54-$289.69

specifications cylinderheapar:

• for models: Deville
• for makes: Cadillac
• for years: 1987
• mpn: 1618910
• part type: Cylinder Head
• conditions options: 4.1, Rebuilt
• genuine oem: No
• ipn: 306-01424a
• manufacturer warranty: 6 Month

returns cylinderheapar:

• paid by: Seller
• policy: Returns Accepted
• time: 60 Days

offer cylinderheapar:

• started: May 7, 2026
• sold: 0
• availability: In Stock
• quantity: 1
• options: Ship-to-home
• best offers: True

payments cylinderheapar:

• credit card: Visa
• other
• wallet: Paypal

shipping cylinderheapar:

• type: Fixed
• carrier: FedEx
• cost: $0.00
• transit: 2-5 Days
• service: FedEx Ground / FedEx Home Delivery
• class: Standard

seller cylinderheapar:

• rating: 99.9%
• # reviews: 50325
• city: Spokane, Washington

general cylinderheapar:

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

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