Has anyone tried to launch a car with the converter actually unlocked through all of 1st gear? Or launch in "slip" and max slip out to 200 rpms?
In both Sport and Track mode, converter lockup happens at a pretty low rpm (1000-1500) in 1st.... with overlock occurring in Track mode. Most cars with a decent cam are idling at 800-850, so the converter locks essentially as soon as the throttle is pressed.
To me, this nullifies any potential torque multiplication from the converter since output shaft speed is almost immediately forced to 1:1 with engine rpm.
Or....perhaps raise lockup above the converter flash?
I understand why Dodge locks it up (longevity)...but my understanding is the greater the difference between output shaft speed and engine rpm, the greater the torque multiplication effect.... at least up to a point.
Ideally we could then lock it up after the 60'.
I'm also going to play around with lockup at peak rpm in higher gears (4-5 shift). In Track mode, with Overlock, recovery rpm is 5500 rpm off a 7k shift. It seems that a little slip on the shift would increase the recovery rpm.
I do know Dodge uses a different slip time strategy with 8HP70 for the 1320 cars. They actually dramatically increase upshift slip times to around 400ms in Max mode. I had read they learned the Demon was actually faster with longer slip versus less and they carried this data over to the 1320.