Stall on a Stock 904 Converter?

Anyone know what the stall would be on this stock 904 converter that came with my '73 Swinger with a 318? View attachment 1714980618

Brake stall on my completely stock 318 - 1800 RPM. Same converter with a low compression 360 with a MP 268/272 - 450/455 cam - 2100 RPM brake stall