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Torque Converter Size Formula:
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The torque converter size is a critical factor in drag racing performance. It determines how effectively your engine's power is transferred to the drivetrain at launch. The size is calculated based on your engine's horsepower and desired stall speed.
The calculator uses the following equation:
Where:
Explanation: This simple formula helps determine the optimal torque converter size for your drag racing application based on power and desired launch characteristics.
Details: Choosing the right torque converter size is crucial for maximizing your vehicle's launch performance. A properly sized converter will allow your engine to reach its optimal power band quickly while minimizing power loss.
Tips: Enter your engine's maximum horsepower and desired stall speed in RPM. The calculator will determine the appropriate converter size. All values must be positive numbers.
Q1: What is stall speed?
A: Stall speed is the maximum RPM your engine can reach with the brakes fully applied and the transmission in gear before the tires begin to turn.
Q2: How does converter size affect performance?
A: A larger converter allows higher stall speeds which can help high-powered engines stay in their power band, while smaller converters provide better street manners.
Q3: Should I use peak horsepower or average?
A: For drag racing applications, use your engine's peak horsepower number for this calculation.
Q4: What if my calculated size doesn't match available converters?
A: Choose the closest available size, or consult with a converter specialist who can build a custom unit to your exact specifications.
Q5: Does this work for all types of racing?
A: This calculation is specifically designed for drag racing applications where high stall speeds are typically desired.