s10 4.3 L v6 converter. Corvette L98 (88-90ish) 2200stall
the GM converters have a "K rating" From that you can calculate the expected stall speed depending on engine torque output.
The K rating is expressed by the 4 letter code on the converter.
Some one smart will know what that all means.
Google search it.
The 1987 ish Monte Carlo SS w305HO and th200r4 had a special unique high stall lock up converter. Gives about 3200 stall when behind a typical healthy 350cid motor.
With the cam you want to use you can use up to a 3000 stall W/lock up function. If you want real strong off the line acceleration, you'll like the higher stall.
Find a real deal custom converter made on a small 245MM case diameter.
Such as sold by Precision Industries or Yank.
The modified "high stall" "stock" converters are not very efficient.
The stall is raised by bending the converter fins to a more negative angle.
The stall is higher but at the cost of power transmission efficiently.
You get what you pay for when it comes to late GM lock up style converters.