Volume IX, Issue 3, Page 34


03/08/07

Is the best stall speed for a drag race converter based on peak torque alone or are there other factors?

Grant Howell, Victoria, B.C. Canada

Grant,

Peak torque is one of many points to consider when setting up a racing or performance torque converter.  We have a page on our website, mikestransmission.com that we use to gather as much information as possible about the customers combination.  That, along with dyno sheets which a lot more customers have today really gives us a good idea of the needs of the vehicle/engine combination. 

When we look at those dyno sheets we look at how wide or broad the torque curve is, for instance: Good torque over a 3000-3500 rpm band within 20-30 ft lbs of peak torque, or only 1000 rpm band within 20-30 ft lbs. of peak torque.  This is what we call a peaky motor, power and torque in a small rpm window.  These peaky engines are more challenging to set up a torque converter for.

Mike

Mike’s Transmission
Lancaster CA
(661) 723-0081

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