Will launching in second gear hurt the trans?

I'm not sure I see a problem

You really think heat is a problem compared to, say?

A Great Big 440 Motorhome pulling a trailer on a hot day? Up, down curvy, back, mountain roads, or negotiating some town, etc. I don't think the converter "knows" what gear it's in, only that it's got a lot of torque on the input and "for some reason" LOL can't turn the output.

N' yeh. I know. Every once in awhile they kill a converter.

yep the tranny gets really hot and if you dont have a good cooler or multiple your gonna burn up clutches...

above post if correct its easier on SOME parts as its hitting softer, but your still putting a ton more load on other parts than normal...

as i said why take the chance and back off the timing or make a throttle stop? with no adverse effects to anything else...