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Just curious (expanding my automatic knowledge), what's the stock stall speed on an LS1 4l60e?

What's the difference between stall speed and flash RPM? Which one is more important to what?
 
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Stock converters stall at 1600-1800.

Stall speed is estimated and it is theoretically the max speed the motor will spin while holding the car still. Usually the power overcomes the brakes before you can get near the rated stall speed, so you can't actually duplicate the stall speed in the car..its more of a bench measurement.

The flash speed I guess you could say is the same thing but due to engine power levels, etc. the flash speed can and usually does vary from rated stall speed.

If you sit at the line at idle, and nail the gas, the converter will flash up to some certain RPM before the car moves. That's the flash speed.

My 2800 rated converter would hit 3000 off the line flash speed.
 

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Discussion Starter #3
ok, cool

I was working on my tune at Eastside a couple of weeks ago and I watched/handed wrenches to my buddies Gary and Shawn as they were tossing a 4400 (think) stall behind Gary's TH400. Then Shawn took it out on the street and ...warmed up the tires :D

When he got done he said it flashed at about 4k or 4.2k, but I didn't really know what they were talking about.
 
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