Converter flash vs. Peak torque

[Ultimate Converter Concepts]

Originally Posted by Don Whitmore

In general, why would you start with the converter flash OVER the engine peak torque point? Peak torque is where the engine is 'happy,' right? The best engine volumetric efficiency is at peak torque...

Hi Don, By starting approx. 2-300 over peak torque you don't risk having the converter fall back below peak torque, most will fall back 1-200 rpm's after initial flash, and risk having the engine lag getting back to where it makes peak and above. You also don't want the engine to fall back to below where it makes good torque on the shift. This general rule of thumb should keep the engine "happy" as far as coupling at the meat of the torque curve and allowing the engine to create maximum acceleration(engine speed)through it's usable RPM range.With all the different combination's there are, even in the same class with the same specs, every engine is different and the converter should compliment that particular combo. The old adage is true with converters, one size does not fit all. If you want you can call me at the shop during the day, I would be more that happy to try to answer your questions personally.