1. Cylinder Heads & Parts Engines Components For Sale
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  3. ATK ENGINES 2P39

ATK ENGINES 2P39 Cylinder Head Pontaic 653517030307

fits make: Buick, Olds. year: 1985–1988.

2p39 Atk Engines Remanufactured Cylinder Head For 1985-1988 Buick Olds And Pontaic

( Brand: Atk Engines ), ( Manufacturer Part Number: 2P39 ), ( Part Type: Cylinder Head ), ( Country Of Origin: Usa ), ( UPC: 653517030307 )

Review ATK ENGINES Remanufactured Cylinder Head Buick Olds And Pontaic fits 1985–1988

The **ATK Engines 2P39 Cylinder Head for 1985 1988 Buick, Oldsmobile, and Pontiac V6 engines** is a meticulously crafted, high-performance replacement part designed to restore peak efficiency, reliability, and power output to your classic GM small-block V6. Engineered to exacting specifications, this **2P39 cylinder head** is built from premium cast iron, ensuring durability and resistance to thermal stress while maintaining optimal heat dissipation for consistent performance. The head features precision-machined combustion chambers and intake ports, optimized for improved airflow and better combustion efficiency, which translates to enhanced throttle response, smoother power delivery, and reduced emissions critical for both street driving and light track use. The valve seats are hardened and precision-ground to accommodate the correct valve sizes, preventing premature wear and ensuring a tight seal for maximum compression and fuel economy. Additionally, the head includes **high-quality cast-in valve guides and hardened valve seats**, designed to withstand the rigors of high-performance applications, whether you're running stock or aftermarket camshafts, carburetors, or fuel injection systems. Compatible with the **3.8L (231 cubic inch) V6 engines** found in the 1985 1988 Buick Skylark, Oldsmobile Cutlass Supreme, and Pontiac 6000, this head is a direct drop-in replacement for OEM failures, offering the same structural integrity and performance characteristics as the original but with the added benefit of improved machining and material quality. Whether you're restoring a classic muscle car, upgrading an older vehicle for modern reliability, or simply replacing worn components, the **ATK Engines 2P39 cylinder head** delivers a seamless fit, superior craftsmanship, and the confidence of a part built to last ensuring your engine runs with the power and precision it was designed for.

Buying an aftermarket cylinder head for a 1985 1988 Buick, Oldsmobile, or Pontiac (specifically an ATK engine with a 390 or 350 cubic inch design) can be a cost-effective way to improve performance, reliability, or both. Below are the key pros and cons to consider, followed by a conclusion and recommendation.

### Pros of Buying an ATK Engine Cylinder Head

1. **Performance Gains** Aftermarket cylinder heads, especially those designed for high-performance applications, often feature improved airflow, larger valves, and better porting. This can lead to increased horsepower and torque, particularly if paired with a tuned engine. Some heads are optimized for forced induction (turbocharging or supercharging), which can significantly boost power output.

2. **Reliability Improvements** Stock cylinder heads on these engines were known for issues like warping, poor valve sealing, and inadequate cooling. Aftermarket heads are often manufactured with better materials (e.g., forged aluminum) and precision machining, reducing the risk of warping or cracking under high loads. Some kits include upgraded internals like hardened valves and seats, which can extend component life.

3. **Compatibility with Modifications** If you plan to modify your engine (e.g., forced induction, nitrous oxide, or high-performance camshafts), aftermarket heads are often necessary to handle the increased stress. Stock heads may not be able to withstand the heat and pressure generated by these upgrades without failing.

4. **Cost Savings Compared to Rebuilding Stock Heads** While the upfront cost of aftermarket heads can be high, they may be more economical in the long run than repeatedly rebuilding or replacing warped stock heads. A single set of high-quality aftermarket heads can last for years with proper maintenance.

5. **Customization Options** Aftermarket heads come in various configurations, such as single-plane, dual-plane, or even heads designed for specific applications (e.g., street, strip, or daily driver use). This allows you to tailor the head to your engine s intended use, whether it s for towing, drag racing, or daily driving.

6. **Easier Installation and Maintenance** Some aftermarket heads are designed with modern gaskets, studs, and mounting features that simplify installation compared to older stock heads. Additionally, they may come with detailed instructions and support from the manufacturer, reducing the risk of installation errors.

7. **Potential for Increased Engine Life** By improving airflow and cooling, aftermarket heads can reduce internal engine temperatures, which can prolong the life of other components like pistons, rods, and bearings. This is particularly beneficial for engines that see heavy use or high-performance applications.

### Cons of Buying an ATK Engine Cylinder Head

1. **High Upfront Cost** Aftermarket cylinder heads can be expensive, often costing several hundred to over a thousand dollars per head, depending on the brand, materials, and features. This can be a significant investment, especially for enthusiasts on a budget.

2. **Installation Complexity** While some aftermarket heads are easier to install than stock heads, others require specialized tools, machining, or even professional installation. Improper installation can lead to leaks, warping, or other issues, negating the benefits of the upgrade. Additionally, you may need to machine the deck surface of the block to ensure a proper seal, which adds to the cost and labor.

3. **Potential for Compatibility Issues** Not all aftermarket heads are drop-in replacements. Some may require modifications to the engine block, intake manifold, or other components to fit correctly. For example, heads designed for a 350ci engine might not fit perfectly on a 390ci block without adjustments. Always verify compatibility with your specific engine configuration.

4. **Quality Variability** The aftermarket is flooded with products of varying quality. Some cheaper heads may be poorly machined, use substandard materials, or lack proper heat treatment, leading to premature failure. It s crucial to research brands and read reviews to ensure you re purchasing a reputable product.

5. **Maintenance and Upkeep** Aftermarket heads, especially those designed for high-performance applications, may require more frequent maintenance. For example, they may need more frequent valve adjustments, cooling system checks, or even replacement of internal components like springs and retainers. This can add to the long-term cost of ownership.

6. **Potential for Overkill** If your engine is not heavily modified or used for high-performance applications, the gains from aftermarket heads may be minimal. In some cases, the cost and complexity of installing aftermarket heads may not justify the performance improvements for a daily driver or lightly used engine.

7. **Risk of Voiding Warranties** If your vehicle is still under warranty, installing aftermarket parts like cylinder heads may void the warranty, especially if the manufacturer considers it a "non-OEM" modification. This is something to consider if you plan to keep the vehicle long-term or sell it in the future.

8. **Time-Consuming Project** Installing aftermarket heads is a labor-intensive process that can take several hours or even days, depending on your experience level. This includes removing the stock heads, cleaning the block, installing new gaskets, and performing a proper break-in procedure. For those without mechanical experience, this may require hiring a professional mechanic, adding to the cost.

### Conclusion

Aftermarket cylinder heads for the ATK engine (1985 1988 Buick, Oldsmobile, or Pontiac) offer significant performance and reliability benefits, particularly for enthusiasts who plan to modify their engines or push them beyond stock limits. They can improve airflow, reduce the risk of warping, and extend the life of the engine, making them a worthwhile investment for high-performance applications. However, the high cost, potential installation challenges, and variability in quality mean that they are not always the best choice for every situation.

For a daily driver or lightly used engine, the gains from aftermarket heads may not be worth the expense, and rebuilding or upgrading stock heads could be a more practical solution. On the other hand, if you re building a high-performance engine, towing a heavy load, or planning to use forced induction, aftermarket heads are often the best way to ensure reliability and performance.

### Recommendation

If you decide to proceed with aftermarket cylinder heads for your ATK engine, follow these steps to maximize success:

1. **Research Thoroughly** Look for reputable brands with a history of producing high-quality heads for your specific engine configuration. Brands like Edelbrock, JE, or Holley are well-regarded in the aftermarket, but there are also niche manufacturers that specialize in ATK engines. Read forums, reviews, and consult with experienced mechanics before purchasing.

2. **Verify Compatibility** Ensure the heads you choose are designed for your exact engine displacement (350ci or 390ci) and application (street, strip, or forced induction). Some heads may require modifications to the block or intake manifold, so plan accordingly.

3. **Budget for Installation** Factor in the cost of tools, gaskets, studs, and potentially professional labor if you re not experienced with engine work. A proper installation is critical to the success of the upgrade.

4. **Consider Alternatives** If your budget is limited, explore options like rebuilding your stock heads with upgraded internals (e.g., new valves, seats, and springs) or using aftermarket heads designed for your specific application. In some cases, a hybrid approach (e.g., aftermarket heads with stock internals) can provide a balance of performance and cost.

5. **Prioritize Quality Over Price** Avoid cutting corners on materials or quality. Cheaper heads may save you money upfront but could lead to costly failures down the line. Invest in heads from trusted manufacturers and ensure they are properly installed.

6. **Plan for Long-Term Maintenance** Aftermarket heads may require more frequent maintenance, such as valve adjustments or cooling system checks. Factor this into your budget and schedule regular inspections to keep your engine running smoothly.

7. **Consult with Experts** If you re unsure about any aspect of the installation or upgrade, consult with a mechanic or engine builder who has experience with ATK engines. Their expertise can help you avoid common pitfalls and ensure the best possible results.

**Final Verdict**: For enthusiasts building high-performance ATK engines or those who have experienced issues with stock heads, aftermarket cylinder heads are a strong recommendation. However, they are not a necessity for every application. Weigh the pros and cons carefully, research your options, and proceed with a plan that aligns with your goals and budget. If done correctly, aftermarket heads can significantly enhance the performance and reliability of your ATK engine.

Details:

American Express.

part #: 2p39 price

  • $590.41

specifications cylinderheapar:

  • for makes: Buick, Olds
  • for years: 1985-1988
  • brand: Atk Engines
  • mpn: 2p39
  • part type: Cylinder Head
  • country of origin: Usa
  • upc: 653517030307

offer cylinderheapar:

  • options: Ship-to-home
  • availability: In Stock
  • quantity: 2
  • started: May 29, 2026
  • sold: 0

seller cylinderheapar:

  • rating: 99.5%
  • city: , Ohio
  • # reviews: 632651

general cylinderheapar:

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

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

shipping cylinderheapar:

  • transit: 4-7 Days
  • type: Fixed
  • cost: $0.00
  • class: Standard
  • service: Standard

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for makes: buick, olds, for years: 1985-1988, part type: cylinder head, country of origin: usa,
category: auto parts > car truck parts accessories > engines engine parts > cylinder heads, sku: 12207089048069604,
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