I would have raised to get his last $0.65 into the pot and then be happy I got my money in with the best of it.

Board: 7c 8c 6c
Dead:

equity (%) win (%) tie (%)
Hand 1: 68.0303 % 65.05% 02.98% { 8h8s }
Hand 2: 31.9697 % 28.99% 02.98% { 9d9h }

What else do you want?