Best Cam for a 340

Ma Mopar called its own 284 purple cam to largest cam you could use in a bigblock with a stock stall convertor.
I would think a 284 in a 340 would surely like some extra stall.

I've had a 284 Mopar purple cam in a 440 powered heavy Chrysler Newport which only got 'happy' when backed by a 3800 stall convertor and 3.91 gears.
It would spin the tires (325/50/15) through 1st and 2nd gear.