TURBO ACTION 17508M42 Stall Torque Converter 727

( Brand: Turbo Action ), ( Manufacturer Part Number: 17508M42 ), ( Part Type: Torque Converter ), ( Output Shaft Diameter: 8 In ), ( Stall Speed: 5300-5500 ), ( Universal Fitment: No ), ( Performance Part: Yes )

Review TURBO ACTION Mopar 727 Inch Stall Torque Converter

The **Turbo Action 17508M42 Mopar 727 Stall Torque Converter** is a high-performance, precision-engineered transmission component designed specifically for Mopar 727-based applications, including classic muscle cars, drag racing builds, and high-torque street machines. Built to deliver exceptional stall speed and torque multiplication, this torque converter is crafted from durable, heat-resistant materials to withstand the intense demands of aggressive driving, high horsepower setups, and prolonged under-the-hood heat. The **M42** designation indicates a specialized design optimized for maximum stall resistance and smooth engagement, making it ideal for applications where a firm, responsive hook-up is critical such as in drag racing, street machines with forced induction, or high-revving engines that require a converter capable of handling sustained power delivery without slipping. Its robust construction includes a high-quality aluminum housing, reinforced turbine and impeller blades, and a robust stator assembly, all engineered to minimize internal friction while maximizing efficiency. The converter s **1750 stall speed** (measured in RPM) provides a balanced sweet spot for engines producing moderate to high horsepower, ensuring a firm hook-up without excessive stall drag that could strain the transmission or engine. Whether paired with a manual or automatic transmission, this converter excels in applications where a blend of performance and reliability is essential, such as in a restored 1960s Mopar muscle car, a modern turbocharged V8, or a high-torque diesel build. Built to Mopar specifications, it integrates seamlessly with stock and aftermarket 727 transmission housings, offering a drop-in replacement that enhances performance without compromising durability. For enthusiasts seeking a converter that delivers both power and precision, the **Turbo Action 17508M42** is a standout choice, combining proven engineering with the ruggedness needed to handle the most demanding driving scenarios.

Buying a **Turbo Action 17508M42 Mopar 727 Stall Torque Converter** (a high-performance, high-stall converter designed for muscle cars and performance applications) has several advantages and disadvantages. Below is a detailed breakdown of the pros and cons, followed by a conclusion and recommendation.

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### **Pros of the Turbo Action 1727 Stall Torque Converter**

1. **High Stall Speed (1727 RPM)** This converter is designed for aggressive launch applications, making it ideal for drag racing, street performance, and high-torque engines (e.g., 454/502 big-blocks, 426 Hemi, or modern muscle cars with forced induction). The high stall speed helps prevent engine lugging during hard launches.

2. **Durability and Build Quality** Turbo Action converters are known for their robust construction, often featuring high-quality materials like billet steel and reinforced components. They are built to handle extreme stress, making them suitable for heavy-duty applications.

3. **Compatibility with Performance Engines** The 727 stall converter is designed to work well with high-torque applications, including naturally aspirated and forced-induction engines. It pairs well with modern transmissions like the Mopar TorqueFlite 727, 727R, or 727T, as well as aftermarket transmissions.

4. **Improved Launch Performance** The high stall speed helps prevent wheel spin and allows for quicker acceleration off the line, which is critical for drag racing, street performance, and towing applications.

5. **Wide Availability of Parts and Upgrades** Turbo Action offers a variety of options for this converter, including different pump sizes, clutch kits, and torque converter coolers. This makes it easier to fine-tune performance or address wear over time.

6. **Good for High-Torque Applications** If you have a big-block engine (e.g., 454, 460, 502) or a turbocharged/direct-injected engine, this converter can help manage torque more effectively than a standard unit.

7. **Reputable Brand** Turbo Action is a well-respected name in the performance torque converter market, with a history of producing reliable, high-performance units.

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### **Cons of the Turbo Action 1727 Stall Torque Converter**

1. **Harsh Launch Feel** A 1727 stall converter is very aggressive, which can result in a "jerky" or abrupt launch feel, especially in street driving. This may not be ideal for daily drivers who prefer a smoother, more refined shift experience.

2. **Potential for Overheating** High-stall converters generate more heat due to the increased friction and stress on the clutch pack. If not paired with a torque converter cooler or adequate transmission fluid, this can lead to premature wear or failure.

3. **Increased Transmission Stress** The high stall speed puts extra strain on the transmission s internal components, including the input shaft, bearings, and clutch packs. This may require more frequent maintenance or upgrades to the transmission itself.

4. **Not Ideal for Light-Duty or Low-Torque Applications** If you have a small-block engine (e.g., 350, 400) or a lightly modified vehicle, a 1727 stall converter may be overkill, leading to unnecessary wear or poor drivability.

5. **Cost** High-performance torque converters like this one are more expensive than stock units. Additionally, you may need to invest in a torque converter cooler, upgraded transmission fluid, and potentially other transmission components to support it.

6. **Potential for Clutch Pack Wear** The aggressive nature of the converter can accelerate wear on the clutch pack, especially if the transmission fluid is not changed regularly or if the converter is not properly maintained.

7. **Limited Use in Automatics Without Modifications** Some stock automatic transmissions may struggle with a 1727 stall converter, especially if they lack a torque converter cooler or have stock fluid. You may need to upgrade the transmission or fluid to avoid issues.

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### **Conclusion**

The **Turbo Action 1727 Stall Torque Converter** is an excellent choice for enthusiasts running high-torque engines in drag racing, street performance, or towing applications. Its high stall speed provides aggressive launch characteristics and helps prevent engine lugging, making it ideal for big-block setups or forced-induction applications. However, it is not suited for light-duty or daily driving scenarios where a smoother shift feel is desired.

If you plan to use this converter, you should also consider investing in a torque converter cooler, high-quality transmission fluid (e.g., Mopar ATF 4 or a synthetic alternative), and potentially upgrading other transmission components to ensure longevity. Additionally, regular maintenance is crucial to prevent premature failure.

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### **Recommendation**

- You have a high-torque engine (e.g., 454/502 big-block, 426 Hemi, or turbocharged/direct-injected small-block).

- You are running a performance application (drag racing, street performance, or towing).

- You are prepared to invest in supporting components like a torque converter cooler and high-quality transmission fluid.

- You understand that the launch will be aggressive and are okay with a less refined driving experience.

- You have a light-duty or low-torque engine (e.g., stock 350, 400).

- You primarily use your vehicle for daily driving where a smooth shift is preferred.

- You are not willing to invest in additional transmission upgrades or maintenance.

- Your transmission lacks a torque converter cooler or uses stock fluid.

For most **big-block or turbocharged applications**, this converter is a solid upgrade. For **small-block or lightly modified vehicles**, a lower-stall converter (e.g., 1200-1500 stall) may be a better fit. Always ensure compatibility with your transmission and engine setup before purchasing.

Details:

Mopar 727 Turbo Action 8 inch converter 17508M42 5300-5800Will stall different based on your set up I flashed at 4800 in my car, 505 Big Block 4,56 gear a 3500 lb car.

part #: 17508m42 price

• $500.00

specifications torquconv:

• for makes: Mopar
• brand: Turbo Action
• mpn: 17508m42
• part type: Torque Converter
• output shaft diameter: 8 In
• stall speed: 5300-5500
• universal fitment: No
• performance part: Yes

offer torquconv:

• started: May 10, 2026
• options: Ship-to-home
• sold: 0
• availability: In Stock
• quantity: 1

seller torquconv:

• city: Galloway, Ohio
• # reviews: 2110
• rating: 100.0%

returns torquconv:

• policy: No Returns

payments torquconv:

• credit card: Diners-club
• wallet: Paypal
• money order
• other

shipping torquconv:

• carrier: USPS
• cost: $41.75
• service: USPS Ground Advantage
• class: Standard
• transit: 4-10 Days
• type: Calculated

general torquconv:

• condition: Used
• Car Truck Parts Accessories > Transmission Drivetrain > Torque Converters

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