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The Torque Converter is the biggest generator of heat in an automatic transmission. Powerbraking puts the converter at it's highest stall speed generating lots of internal fluid friction and quickly elevating internal temperatures. The good news is it cools down pretty quickly too once you get moving. Another trade off in powerbraking from a standing start is that you are not allowing the best suspension travel and weight transfer to occur since you are preloading the suspension while you are sitting there generating all that noise and heat. You are really not doing your transmission any favors by powerbraking since it is hard on many of the internal components as well. If you like to launch then a higher stall torque converter is hard to beat. It will vastly improve off the line performance in the SSR and if you choose the right converter, will not adversley affect low speed driving, fuel economy or trans durability.
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