DACCO 49797BRRV Auto Trans Torque Converter

( Brand: Dacco ), ( Manufacturer Part Number: 49797BRRV ), ( Part Type: Torque Tran Converter ), ( Manufacturer Warranty: 12 Month Warranty ), ( Notes: Automatic Transmission Torque Converter Fitment Note ), ( Years: 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 ), ( Application: Chevrolet Corvette Auto Trans Torque Converter ), ( Product Name 2: Automatic Transmission Torque Converter ), ( Cs-sku: 400 )

Review DACCO Chevrolet Auto Trans Torque Converter fits CORVETTE 1962–1971

The **Dacco 49797BRRV** is a meticulously crafted, high-performance torque converter designed specifically for the legendary 1963 1971 Chevrolet Corvette models equipped with automatic transmissions, including the iconic Powerglide and Turbo Hydramatic 400 (TH400) setups. Engineered to deliver unparalleled power transfer and responsiveness, this torque converter is a precision-built component tailored to enhance the raw, aggressive driving experience that Corvette enthusiasts crave. Built with a robust **3.50 stall ratio**, this unit strikes an ideal balance between smooth engagement and aggressive launch characteristics, making it perfect for both street driving and spirited track use. The **aluminum housing** ensures lightweight construction without compromising durability, while the **high-capacity impeller and turbine** are designed to handle the high torque outputs of the L84, L72, or L78 engines commonly found in these classic Corvettes, ensuring seamless power delivery even under heavy loads. The **retained ring design** and **optimized blade geometry** improve efficiency and reduce slippage, allowing for quicker shifts and a more engaging driving feel. Whether you're revving the engine for a quick acceleration from a stoplight or pushing the limits on a backroad, this torque converter ensures that every ounce of power from your Corvette s legendary V8 is efficiently transferred to the wheels. For those seeking a blend of authenticity and performance, the **Dacco 49797BRRV** is an essential upgrade, restoring the raw, unfiltered power of the original Corvette while incorporating modern refinements for reliability and responsiveness. Perfect for both restoration projects and high-performance builds, this torque converter is a must-have for any Corvette owner looking to reclaim the spirit of the golden era.

### **Pros and Cons of Buying a Dacco 49797BRRV Torque Converter for a 1962 1971 Chevrolet Corvette with an Automatic Transmission**

1. **Compatibility and Fitment** The Dacco 49797BRRV is specifically designed for the 1963 1964 Corvette s Muncie M20/M21 automatic transmission (and closely related models like the 1962 1965 3-speed Powerglide, though the M20/M21 is the primary target). This means it should fit without major modifications, reducing installation hassles.

2. **Improved Performance** Stock torque converters (especially from the early M20/M21 transmissions) can be weak, leading to slipping or overheating under heavy loads. A Dacco converter is engineered for better stall speed, smoother engagement, and increased torque capacity, which can enhance acceleration and towing capability.

3. **Durability and Strength** Dacco converters are built with high-quality materials and precision machining, making them more robust than OEM units. This can extend the life of your transmission by reducing stress on the pump and turbine.

4. **Better Shift Feel** A well-matched torque converter can improve shift quality, reducing jerkiness and improving overall drivability, especially in high-performance applications.

5. **Aftermarket Support** Dacco is a reputable brand with a history of producing reliable torque converters for classic cars. They offer warranties and technical support, which can be valuable if issues arise.

6. **Retains Vintage Look (If Needed)** While not a primary feature, some aftermarket converters are designed to mimic OEM appearance, which may appeal to purists who want to avoid overly modern-looking parts.

7. **Cost-Effective Upgrade** Compared to rebuilding or replacing a transmission, a torque converter upgrade is relatively inexpensive and can significantly improve performance without major modifications.

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1. **Limited Stall Speed Range** The Dacco 49797BRRV is a mid-range converter (typically around 1,800 2,200 RPM stall speed). While this is suitable for most stock and mildly modified Corvettes, it may not be aggressive enough for high-performance builds (e.g., with forced induction or heavy modifications). A higher-stall converter (e.g., 2,500 RPM) might be needed for serious power increases.

2. **Potential for Overheating** If the converter is too large for the engine s power output, it can overheat, especially in stop-and-go traffic or under heavy loads. This is more of a concern with very high-stall converters but can also affect mid-range units if the transmission fluid is inadequate or the cooler is insufficient.

3. **Installation Complexity** Replacing a torque converter requires draining transmission fluid, removing the transmission pan, and often the torque converter housing. While not extremely difficult, it does require some mechanical skill and the right tools. If the transmission is already modified or the converter is stuck, it could become a time-consuming job.

4. **Compatibility with Non-M20/M21 Transmissions** While the Dacco 49797BRRV is designed for the M20/M21, it may not fit perfectly in a 1962 Powerglide or later transmissions (e.g., Turbo Hydramatic 400 in 1965 1967 Corvettes). Double-checking fitment is crucial to avoid issues.

5. **Fluid Requirements** A torque converter upgrade often necessitates using a high-quality automatic transmission fluid (e.g., Mopar ATF 4, Dexron, or a synthetic like Motul ATF). Using the wrong fluid can void warranties or reduce performance.

6. **Potential for Reverse Gear Issues** Some aftermarket converters can affect reverse gear engagement, especially if the converter housing or stator are not perfectly aligned. This is rare but possible and may require adjustments during installation.

7. **Cost of Additional Modifications** If the converter is part of a larger transmission upgrade (e.g., new clutch, bushings, or cooler), the total cost can add up. Ensure you re only buying what s necessary for your application.

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The Dacco 49797BRRV torque converter is a **solid choice** for a 1963 1964 Corvette with an M20/M21 automatic transmission, offering a balance of performance, durability, and compatibility. It is particularly well-suited for drivers who want to **improve acceleration, reduce slipping, and extend transmission life** without overhauling the entire drivetrain.

However, it is **not ideal** for high-performance builds (e.g., turbocharged or heavily modified engines) where a higher-stall converter would be more appropriate. Additionally, the installation process requires careful attention to fluid selection and alignment to avoid issues.

If your primary goal is **reliability and modest performance gains** in a stock or lightly modified Corvette, this converter is a **recommended upgrade**. If you re pushing the engine to extreme power levels, consider a **higher-stall converter** (e.g., a 2,500 RPM unit) or a **custom-built converter** for optimal results.

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- You have a 1963 1964 Corvette with an M20/M21 transmission.

- You want a **direct drop-in upgrade** for better stall speed and durability.

- Your engine is **stock or mildly modified** (300 400 hp range).

- You re willing to invest in **high-quality transmission fluid** and proper installation.

- Your engine produces **significantly more than 400 hp** (consider a higher-stall converter).

- You re using a **non-M20/M21 transmission** (e.g., Powerglide or Turbo 400).

- You re on a tight budget and can t afford additional modifications (e.g., cooler, fluid changes).

For most **stock or mildly modified 1963 1964 Corvettes**, the Dacco 49797BRRV is a **wise investment** that will pay off in smoother shifts, better acceleration, and longer transmission life. Pair it with **fresh transmission fluid, a transmission cooler (if needed), and careful installation**, and you ll see noticeable improvements.

Details:

Parts Geek - For 1962-1971 Chevrolet Corvette Auto Trans Torque Converter 49797BRRV 1963 1964: Review Fitment Notes to Ensure Proper Fit condition: Remanufactured Brand: Dacco Notes: Automatic Transmission Note:12.25 Diameter, High Stall 12 Month Warranty Vehicle: Engine: Transmission: 1970-1971 Corvette7.4L V8Powerglide, 1969-1971 Corvette5.7L 1962-1968 Corvette5.3L V8Powerglide.

part #: 49797brrv price

• $249.00

specifications torquconv:

• for models: Corvette
• for makes: Chevrolet
• for years: 1962-1971
• brand: Dacco
• mpn: 49797brrv
• part type: Torque Tran Converter
• manufacturer warranty: 12 Month Warranty
• notes: Automatic Transmission Torque Converter Fitment Note
• years: 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971
• application: Chevrolet Corvette Auto Trans Torque Converter
• product name 2: Automatic Transmission Torque Converter
• cs-sku: 400

payments torquconv:

• other
• credit card: Discover
• wallet: Paypal

shipping torquconv:

• type: Fixed
• service: FedEx Ground / FedEx Home Delivery
• carrier: FedEx
• cost: $0.00
• class: Standard
• transit: 2-6 Days

seller torquconv:

• # reviews: 329520
• rating: 98.8%
• city: Rockville Centre, New York

offer torquconv:

• availability: In Stock
• quantity: 1
• started: April 21, 2026
• sold: 0
• options: Ship-to-home

general torquconv:

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

returns torquconv:

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

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