IFLY_INDIGO,
I've just had a look at some VIDP and VABB charts.
At VIDP I found several Rnav SIDs requiring a 7 % climb gradient uo to 3600' (Alija, Bipan, Hinda etc) Our VIDP company charts (LIDO) all show a table with required V/S versus groundspeed.
Now if you're asking, if somewhere in the FCOM, you will find the answer to the question as to whether you'll be able to get that V/S in specific conditions, the answer is no. If you're looking for a practical answer to the question my reply is: don't worry, even at MTOW in hot conditions, you'll make it! (assuming thrust reduction at 1500' AGL and acceleration at 3000' AGL)