[4_2_it]

Against a set you are dead:

pokenum -h 8s 7s - 6s 6h -- 4s 6d 2s 9d
Holdem Hi: 44 enumerated boards containing 4s 2s 9d 6d
cards win %win lose %lose tie %tie EV
8s 7s 13 29.55 31 70.45 0 0.00 0.295
6s 6h 31 70.45 13 29.55 0 0.00 0.705

Against an overpair you are in trouble:

pokenum -h 8s 7s - ad ah -- 4s 6d 2s 9d
Holdem Hi: 44 enumerated boards containing 4s 2s 9d 6d
cards win %win lose %lose tie %tie EV
8s 7s 15 34.09 29 65.91 0 0.00 0.341
Ad Ah 29 65.91 15 34.09 0 0.00 0.659

You are a little worse than a coin flip with a pair of 6's:
pokenum -h 8s 7s - ad 6h -- 4s 6d 2s 9d
Holdem Hi: 44 enumerated boards containing 4s 2s 9d 6d
cards win %win lose %lose tie %tie EV
8s 7s 21 47.73 23 52.27 0 0.00 0.477
Ad 6h 23 52.27 21 47.73 0 0.00 0.523

I can't find a call here.