[longassname]

Just because the reverse clutch is not supposed to be playing a role in 1st gear of D range doesn't mean it can't. A bad reverse clutch is the most likely candidate to cause high stall rpm from a standing start. I think that's what you described? It's a common problem in early 92's with failing high clutches (the failing high clutch heats the reverse clutch frictions which are smaller in the early production 92 transmissions than the later models).