GENUINE GM PARTS 19329674 Engine Cylinder Head 195491195233

( Brand: Genuine Gm Parts ), ( Manufacturer Part Number: 19329674 ), ( Manufacturer Warranty: 1 Year ), ( Core Charge: 75.00 Which Is Included In The Total Price ), ( Type: Engine Cylinder Head ), ( UPC: 195491195233 )

Review GENUINE GM PARTS Engine Cylinder Head

The **GM 19329674 Engine Cylinder Head** is a precision-engineered component designed to deliver optimal performance, durability, and efficiency for select General Motors (GM) small-block V8 and high-performance applications. Crafted from high-quality cast iron or aluminum (depending on the specific variant), this cylinder head is meticulously machined to ensure tight tolerances and seamless integration with the engine block, combustion chamber, and valve train. Its robust design features a **four-valve-per-cylinder architecture**, allowing for improved airflow, better combustion efficiency, and enhanced horsepower and torque output compared to traditional two-valve heads. The head incorporates **intake and exhaust ports** that have been optimized for high-velocity airflow, reducing restriction and maximizing engine breathing critical for both stock and modified engines. The **valve seats and guides** are precision-machined to accommodate high-performance valves, often featuring hardened surfaces to resist wear from aggressive camshaft profiles and high-revving applications. Additionally, the head is equipped with **threaded spark plug holes** and **camshaft bearing caps** that align perfectly with the engine s crankshaft and lifter system, ensuring smooth operation under heavy loads. For improved cooling and longevity, the **water jacket passages** are strategically placed to evenly distribute coolant, preventing hot spots and thermal stress. This cylinder head is engineered to meet or exceed OEM specifications, making it an ideal replacement for worn or damaged original components, as well as a reliable upgrade for enthusiasts seeking enhanced performance. Whether installed in a classic muscle car, a modern performance truck, or a high-revving drag racing engine, the **GM 19329674** delivers the strength and responsiveness needed to push an engine to its limits while maintaining reliability. Proper installation, including the use of high-quality gaskets, sealants, and torque specifications, is essential to ensure a leak-free and high-performing assembly.

Buying a used or aftermarket GM 19329674 engine cylinder head (commonly found in small-block Chevrolet engines) involves several considerations. Below is a detailed breakdown of the pros and cons, followed by a conclusion and recommendation.

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### **Pros of Buying a GM 19329674 Cylinder Head**

1. **Cost-Effectiveness**

Used or aftermarket heads are significantly cheaper than OEM (Original Equipment Manufacturer) parts, especially for high-mileage or older vehicles. This makes them an attractive option for budget-conscious DIYers or those restoring classic cars.

2. **Performance Potential**

Aftermarket heads, particularly those designed for high-performance applications, can improve airflow, combustion efficiency, and horsepower. Port-matching, valve upgrades, and material enhancements (e.g., forged valves, stronger springs) can enhance engine performance.

3. **Customization Options**

- **High-lift cam compatibility** (for better valve lift and duration).

- **Fuel injection or carbureted applications** (some heads are optimized for EFI).

- **Material upgrades** (e.g., nodular iron or aluminum for weight reduction and durability).

- **Valve sizes** (larger valves for increased airflow, though this may require other engine modifications).

4. **Availability of Parts and Support**

GM small-block heads are widely used, so finding gaskets, bolts, studs, and other accessories is straightforward. Many aftermarket manufacturers offer detailed installation guides, machining recommendations, and customer support.

5. **Compatibility with Modifications**

If you re planning other engine upgrades (e.g., turbocharging, supercharging, or forced induction), aftermarket heads can be selected to pair well with these modifications. For example, some heads are designed to handle boost pressures without excessive stress.

6. **Weight Reduction (Aluminum Heads)**

Aluminum heads are lighter than cast iron, which can reduce reciprocating mass and improve engine balance, especially in high-RPM applications.

7. **Machining Flexibility**

Aftermarket heads are often sold "raw" or "pre-machined," allowing you to specify porting, deck height, or valve seat angles to match your engine s needs. This level of customization is rare with OEM heads.

8. **Long-Term Durability (High-Quality Aftermarket)**

Reputable manufacturers use high-grade materials and heat treatments to ensure durability, sometimes exceeding OEM standards. For example, heads designed for drag racing or street performance often incorporate reinforced structures.

9. **Easier to Find Than OEM Parts**

OEM heads for older GM engines can be difficult to source, especially for discontinued models. Aftermarket options provide a reliable alternative without long wait times.

10. **Community and Forums**

The small-block Chevrolet community is vast, with forums (e.g., Chevy101, Reddit s r/chevy) where buyers can seek advice, verify head quality, and learn from others experiences.

---

### **Cons of Buying a GM 19329674 Cylinder Head**

1. **Quality Variability**

The aftermarket is not uniform; some manufacturers prioritize cost over quality. Inferior casting, thin walls, or poor heat treatment can lead to warping, cracking, or premature failure. Always research the brand and read reviews.

2. **Potential for Misalignment or Machining Issues**

Used heads may have been previously machined or modified, leading to inconsistent deck heights, valve seat angles, or port shapes. This can cause poor sealing, airflow restrictions, or even engine damage if not addressed.

3. **Compatibility Concerns**

- **Deck height adjustments** (to match the block).

- **Valve spring retainer or guide changes** (if using larger valves).

- **Exhaust manifold or intake manifold modifications** (for proper sealing).

Ignoring these requirements can lead to leaks or performance losses.

4. **Warranty Limitations**

Aftermarket parts typically come with limited or no warranties compared to OEM parts. If a head fails due to manufacturing defects, you may be responsible for replacement costs.

5. **Installation Complexity**

- **Torque specifications** (over-torquing can warp the head; under-torquing can lead to leaks).

- **Gasket selection** (composite or metal gaskets may be needed for specific applications).

- **Sealing surfaces** (deck surfaces must be flat and clean to prevent leaks).

Mistakes here can result in catastrophic engine failure.

6. **Risk of Counterfeit or Salvage Parts**

The used market is prone to counterfeit or salvaged parts that may have hidden damage (e.g., cracks, warping, or corrosion). Always inspect heads thoroughly or buy from reputable sellers with return policies.

7. **Additional Costs**

- **Machining** (if the head needs porting or decking).

- **Valves, springs, and retainers** (if upgrading).

- **Gaskets, bolts, and studs** (must be compatible with the head).

- **Labor** (if not DIYing the installation).

These expenses can offset the initial savings.

8. **Learning Curve**

For beginners, understanding the nuances of head selection, machining, and installation can be overwhelming. Research and possibly consulting a mechanic are advisable.

9. **Potential for Overbuilding**

Using high-performance heads without corresponding engine modifications (e.g., pistons, crankshaft, fuel system) can lead to detonation, valve float, or other issues. The head must be balanced with the rest of the engine.

10. **Environmental and Ethical Concerns**

Purchasing used parts contributes to the automotive scrap market. While this keeps parts out of landfills, it may not align with ethical sourcing preferences for some buyers.

---

### **Conclusion**

Buying a GM 19329674 cylinder head whether used or aftermarket can be a cost-effective and performance-enhancing choice, provided you approach the purchase with caution and thorough research. The key advantages lie in customization, cost savings, and compatibility with modern engine modifications. However, the risks of poor quality, installation errors, and hidden costs cannot be ignored.

The decision ultimately depends on your budget, skill level, and project goals. If you re a seasoned mechanic or enthusiast willing to invest time in research and machining, aftermarket heads offer excellent value. For beginners or those prioritizing simplicity, OEM heads (if available) or professionally upgraded heads may be safer options.

---

### **Recommendation**

- Purchase a **high-quality aftermarket head** from a reputable manufacturer (e.g., Edelbrock, JE, or Crane). Look for brands with a history of durability and positive reviews.

- Ensure the head is **compatible** with your engine s specifications (e.g., valve sizes, deck height, and material).

- **Machine the head professionally** if you lack the tools or experience, or learn the process carefully before attempting it yourself.

- Pair the head with **high-quality gaskets, bolts, and studs** (e.g., ARP or Mucoff).

- **Test-fit the head** before final installation to confirm sealing and clearance.

- Consider buying a **pre-machined, performance-ready head** from a trusted seller (e.g., Summit Racing, RockAuto, or a local performance shop).

- Opt for a **used OEM head** if available, as it eliminates customization risks but may limit performance gains.

- Consult a **mechanic or engine builder** for guidance on installation, torque specs, and compatibility.

- Start with **minor upgrades** (e.g., porting a used head) before attempting full rebuilds.

- Invest in **specialized heads** designed for turbocharging or supercharging (e.g., heads with reinforced structures or larger ports).

- Work with an **engine builder** to ensure the head is matched with the rest of the engine (e.g., pistons, crankshaft, fuel system).

- Prioritize **aluminum heads** for weight reduction and heat dissipation.

- **Aftermarket:** Summit Racing, RockAuto, JE Performance, Edelbrock, Crane Cams.

- **Used:** Facebook Marketplace, Craigslist, eBay (with caution), local junkyards (inspect thoroughly).

- **Professional Services:** Some shops sell used heads or offer head machining and installation.

- Look for **cracks** (especially around valve guides, spark plug holes, or exhaust ports).

- Check for **warping** by placing the head on a flat surface and using a straightedge.

- Inspect **valve seats and guides** for wear or corrosion.

- Verify **deck height** matches your block (measure with a micrometer).

- Ensure **valves and springs** are in good condition or plan to replace them.

By weighing these factors and taking a methodical approach, you can successfully integrate a GM 19329674 cylinder head into

Details:

See below for instructions. Changed My Mind. High-value items are usually sent with signature-delivery requirements. This part fits vehicles mad e in the following years 2012 ,2013,2014,2015,2016,2017.

Found a Better Price. 19329674: Genuine GM Parts: Engine Cylinder Head. Just Didn't Like it. Return Core paid by: Buyer.

Add details like Tried to install this part, and it didn't fit. Request a Return. Return Core as: Money Back. If you do, our experts will hand-verify compatibility before shipping.

part #: 19329674 prices

• $1015.95-$2381.49

specifications cylinderheapar:

• brand: Genuine Gm Parts
• mpn: 19329674
• manufacturer warranty: 1 Year
• core charge: 75.00 Which Is Included In The Total Price
• type: Engine Cylinder Head
• upc: 195491195233

returns cylinderheapar:

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

general cylinderheapar:

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

payments cylinderheapar:

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

shipping cylinderheapar:

• service: Standard
• class: Standard
• transit: 18-28 Days
• cost: $0.00
• type: Fixed

offer cylinderheapar:

• started: May 16, 2026
• sold: 0
• availability: In Stock
• quantity: 5
• options: Ship-to-home

seller cylinderheapar:

• # reviews: 19120
• rating: 99.2%
• city: Garland, Texas

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