CHEVROLET PERFORMANCE 19417591 Fastburn Cylinder Head Set 604 Engine

( Brand: Chevrolet Performance ), ( Manufacturer Part Number: 19417591 ), ( Type: Cylinder Head ), ( Vintage Part: Yes )

Review CHEVROLET PERFORMANCE Sbc Fastburn Cylinder Head Bare Set 604 Crate Engine

The **Chevrolet Performance 19417591 FastBurn Cylinder Head Bare Set** is a meticulously engineered aftermarket upgrade designed exclusively for the iconic **LS3, LS7, and Gen III/LS1 V8 engines**, offering a dramatic leap in performance through advanced combustion efficiency and high-revving capability. This bare set features **FastBurn combustion chambers**, a proprietary design optimized to maximize airflow and reduce turbulence within the cylinder, allowing for higher compression ratios and improved scavenging of exhaust gases. The result is a noticeable boost in horsepower and torque, particularly at higher RPM ranges, while also enhancing throttle response and overall engine efficiency. Crafted from high-quality **cast aluminum**, these cylinder heads incorporate **precision-machined ports** that have been refined through extensive CFD (Computational Fluid Dynamics) analysis to minimize flow restrictions and maximize volumetric efficiency. The **integrated fastburn chambers** not only improve combustion stability but also reduce the risk of detonation, enabling the use of higher-octane fuels for even greater performance gains. Additionally, the heads are compatible with **modern fuel injection systems**, making them an ideal choice for both stock and high-performance builds. Whether paired with a **supercharged, turbocharged, or naturally aspirated** setup, this bare set delivers a significant performance edge, making it a standout choice for enthusiasts seeking to push their Gen III/LS engines to their absolute limits.

The **Chevrolet Performance 19417591 FastBurn Cylinder Head Bare Set** is designed for the **LS3, LS7, and related 6.0L (604 CID) V8 engines**, offering improved performance through advanced combustion chamber design. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros of the FastBurn Head Set**

1. **Enhanced Performance**

The FastBurn design features **shallow combustion chambers** and **optimized port geometry**, which improve airflow and combustion efficiency. This leads to **higher horsepower and torque gains** compared to stock heads, especially when paired with a high-flow intake, exhaust, and supporting mods.

2. **Compatibility with High-Performance Mods**

The heads are engineered to work well with **forced induction (turbo/supercharger)** and **nitrous oxide (NOS) systems**, making them a popular choice for **big-block LS-based builds**. They also pair well with **high-lift camshafts** and **high-flow fuel systems**.

3. **Durability and Material Quality**

Chevrolet Performance uses **high-quality castings** and **precision machining** to ensure structural integrity. The heads are designed to handle **high RPM and boost pressures** better than stock heads, reducing the risk of catastrophic failure if properly supported.

4. **Aftermarket Support**

There is a **wide range of aftermarket parts** available for these heads, including **valve springs, retainers, seals, and custom porting options**. This makes maintenance, upgrades, and tuning easier.

5. **Better Cooling Efficiency**

The FastBurn design often includes **improved water jacket cooling** and **better valve seat materials**, which can help prevent **pre-ignition (ping) and detonation** under heavy loads.

6. **Retains Stock Mounting Pattern**

The heads **bolt up directly to stock engine blocks**, eliminating the need for a full engine swap or custom mounting solutions.

7. **Good for Both Street and Drag Applications**

Whether used in a **street car, drag bike, or turbocharged build**, these heads provide a solid foundation for performance gains without excessive complexity.

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### **Cons of the FastBurn Head Set**

1. **Cost**

The **FastBurn head set is significantly more expensive** than stock or even mild aftermarket heads. A full set (8 heads) can cost **$1,500 $2,500 **, depending on the retailer and additional components needed (valve springs, seals, etc.).

2. **Requires Supporting Modifications**

- **High-flow intake and exhaust**

- **Performance camshafts (high-lift, long-duration)**

- **Upgraded fuel system (injectors, fuel pump, ECU tuning)**

- **Supporting drivetrain upgrades (transmission, differential, etc.)**

If these mods are not made, the heads may **limit overall power potential** rather than unlock it.

3. **Potential for Overcompression**

The **shallow combustion chambers** can lead to **higher compression ratios**, which may cause **pre-ignition or detonation** if the engine is not properly tuned or if fuel octane is insufficient. This requires **careful tuning and possibly a higher-octane fuel strategy**.

4. **Weight Considerations**

While not excessively heavy, the **FastBurn heads are slightly heavier** than stock heads due to their robust construction. In **high-RPM applications (e.g., turbocharged or nitrous builds)**, this extra weight can contribute to **valve float or spring fatigue** if valve springs are not upgraded.

5. **Installation Complexity**

Installing these heads requires **precision machining, gasket sealing, and proper torque specifications**. Improper installation can lead to **leaks, warping, or even head gasket failure**. Some builders may need to **port the heads further** for optimal airflow, adding to labor costs.

6. **Limited Stock Performance Benefits**

If you re running a **stock or mildly modified engine**, the **FastBurn heads may not provide dramatic gains** they are best suited for **serious performance builds**. For **casual street use**, a **stock head upgrade (e.g., LS7 heads) or a less aggressive aftermarket set** might be more cost-effective.

7. **Potential for Valve Spring Issues**

The **shallow chamber design** can sometimes lead to **valve spring binding or excessive valve float** at very high RPMs unless **aftermarket springs (e.g., Eagle, JE, or Comp Cams)** are installed.

---

### **Conclusion**

The **Chevrolet Performance FastBurn Cylinder Head Bare Set** is one of the **best aftermarket options** for **LS3/LS7-based engines** looking to maximize power through **high-performance tuning, forced induction, or nitrous**. It offers **significant airflow improvements, durability, and compatibility with aggressive mods**, making it a **top-tier choice for serious builders**.

However, it is **not a plug-and-play solution** it requires **supporting modifications** to unlock its full potential. If you re on a **budget or only making mild upgrades**, a **less aggressive head set (e.g., LS7 heads or a ported stock set) may be a better investment**.

For **drag racing, turbocharging, or high-RPM applications**, the **FastBurn heads are an excellent choice** if you re willing to commit to the **additional costs and tuning required**. If you re building a **street car with moderate power goals**, you might consider **alternative head options** that offer a better **cost-to-performance ratio**.

---

### **Final Recommendation**

You are **building a high-performance LS3/LS7 engine** (turbo, supercharger, or nitrous).

You are **willing to invest in supporting mods** (cams, fuel system, exhaust, tuning).

You want **maximum airflow and reliability** for **big-block LS applications**.

You plan to **run high RPMs or aggressive camshafts**.

You re on a **tight budget** and only need **mild performance gains**.

You re not planning to **pair it with a high-flow intake, exhaust, and fuel system**.

You re unsure about **proper installation and tuning**, as improper setup can lead to **reliability issues**.

You prefer **simpler, more cost-effective upgrades** (e.g., ported stock heads or LS7 heads).

- If you want **a more budget-friendly option**, consider **LS7 heads** (which are stock to some high-performance applications) or a **ported stock head set**.

- If you re **turbocharging**, also look into **custom ported heads** or **aftermarket brands like JE or Eagle** for specialized solutions.

- Always **consult a tuner** before installation to ensure **proper fueling, ignition timing, and cooling strategies** are in place.

For **most serious LS3/LS7 builds aiming for **500 HP**, the **FastBurn heads are a strong recommendation** just be prepared for the **additional costs and tuning required**.

Details:

They where my back up set that never used and have moved on from crate racing. 2 heads in total Fresh set of 604 cylinder.

part #: 19417591 prices

• $1034.37-$1173.20

specifications cylinderheapar:

• for makes: Chevrolet
• brand: Chevrolet Performance
• mpn: 19417591
• type: Cylinder Head
• vintage part: Yes

seller cylinderheapar:

• city: West Chicago, Illinois
• # reviews: 6
• rating: 100.0%

general cylinderheapar:

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

returns cylinderheapar:

• policy: No Returns

shipping cylinderheapar:

• service: UPS Ground
• carrier: UPS
• type: Calculated
• transit: 4-8 Days
• cost: $48.30
• class: Standard

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• wallet: Apple-pay
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• other

offer cylinderheapar:

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

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