Is there such a thing as a 5000 stall converter that is streetable ?

33,
Thank you for your sensible comment in post #80.
Some will never get it. The cter is a fluid coupling, is always going to have slippage & the smaller the diam the greater the slippage.
If the 'new techniques' that are applied to small diam high stall cters to tighten up coupling were applied to larger cters, they would have less slippage also. Nothing new there. It depends on what is acceptable.