Head is not ported?
If not, stock carbs are definitely OK. OK anyway.
I used my CB750 K6 stock carbs with 836, ported head, 34mm inlet valves, Action Fours SS-1 cam (0.360 lift, 21/53, 54/22 @ 0 lash 0.04" lift)
Lightened alternator rotor helped to rev a little bit quicker.
Stock carbs were OK. Pods, stock pilots, needles 1 step richer. Mains were +140. Rather open 4-1.
It did not run slower than with Mikuni Smoothbore 29mm that had crappy cracking boots.