On the A320 family you could always try it in the sim with the TRKFPA displayed.
I haven't flown the beast for some years, but can remember being very impressed at the rate of climb with full stick back when settled at protected min speed. I would guess at 5000fpm at 130kts IAS giving about 12degrees climb angle (greater than this whilst trading speed for altitude.
I see no reason why the 737 would not be similar (albeit requiring much greater skill to achieve it).