Choosing a stall speed.

All my factory 340 converters were 3000 stall They brake stalled at 2500 -2800 Depending on how stout the motor was . I have two left here on the shelf. The factory performance converters all had drain plugs. The later truck 727's were 2500 stalled at 2200 on most no drain plug. easy way to tell if your oringinal performance converter is still there. Steve