street torque converter
example my old sbc 71 nova that ran 12.50's for me back in the day had a 3500 stall /4.11's and it was fun but you didnt really want to drive it anywhere it wasn't practical it was always ringing its guts out , my 173k mile stock internal ls1 4l60 car with 3600 vigilante and 373's would kick that novas *** in any scenario then lock up and cruise at 70+ all day with ease ( no rpm drone) I would go 4k stall if it ever needed to come apart....
I think the stalls your thinking of are conservative considering your ability to lockup and having overdrive - if anything go big on stall and lessen gearing- a quality modern lockup stall will get you in the rpm sweet spot without deep gears but I think your 373's will be fine with lockup/OD and a big stall.
All the quality convertor dealers on here offer a free restall to make sure your happy , go higher than you think then if you don't like it you could have them drop it a bit. Plus being cammed it will really like an aggressive stall , a small stall may be a turd with a cam.
-Brian





