In the many decades we've been designing and manufacturing racing torque converters, the biggest misconception or point of confusion most customers have about a torque converter is the stall, flash, or stall RPM.
"I was told this is a 5500 converter, but it won't go any more than 4000 in our other car."
"My buddy gave me his 3000 stall but it is going to 4500, is it broken?"
A torque converter is much like a spring. If we place a heavy weight and a light weight on the same spring separately, the spring will compress more or less depending on the weight's mass. Similarly, a torque converter that stalls to 5500 RPM in a small block powered door car will stall much higher when the converter is installed behind a 632 cubic inch nitrous motor. More torque results in more stall RPM.
Therefore, classification of any torque converter based solely on a stall number isn't very accurate. The size and internal configuration in combination with the torque and weight of the race car determine the true flash stall RPM. If you currently have a BTE converter and would like to know the estimated stall speed RPM, please contact us with the part numbers stamped near the hub, and we will match it to the specifications of your racing car.
We provide only general information about our converter types online - size, price, and general horsepower and torque levels. We feel based on our many years of experience that the best torque converter is specifically selected for each customer's car and engine combination. A completed application form from our website will help our specialists determine the most accurate torque converter for your racing vehicles.