Hungriest finally managed revolutionary portion (7)
I believe the answer is:
tranche
'portion' is the definition.
(I've seen this before)
'hungriest finally managed revolutionary' is the wordplay.
'finally' says to take the final letters.
'managed' becomes 'ran' (both can mean organised or was in charge of).
'revolutionary' becomes 'Che' (Che Guevara the Marxist revolutionary).
The last letter of 'hungriest' is 't'.
't'+'ran'+'che'='TRANCHE'
(Other definitions for tranche that I've seen before include "batch supplied" , "Measure" , "Part of the loan" , "Slice (of income)" , "Part or block of something" .)