The generator matrix

 1  0  0  1  1  1  2  6  1  1  1  1  2  4  6  1  1  1  4  6  1  1  0  2  1  1  0  1  2  1  1  1  6  4  1  1  1  4  1  0  1  1  6  4  2  1  0  1  0  1  1  1  6  2  1  1  1  1  1  1  1  2  1  1  1  1  1  1  1  1  0  1  1  1  4  0  4  6  1  0  6  2  4  1  1  1
 0  1  0  4  5  1  1  1  6  3  0  1  1  2  1  2  7  4  1  0  3  1  1  6  5  6  1  6  1  6  5  2  1  1  0  7  3  4  4  1  7  3  2  6  0  6  1  6  1  1  0  4  1  1  5  5  1  5  1  7  7  2  4  0  0  4  4  0  7  7  4  6  3  2  0  1  1  1  2  2  6  1  2  4  0  6
 0  0  1  7  3  4  3  2  7  3  2  6  5  1  0  0  4  5  5  1  5  1  3  1  4  6  6  0  0  1  2  3  7  0  1  2  1  1  0  1  6  7  1  1  1  5  7  2  2  5  6  3  6  1  7  5  7  1  3  7  1  1  2  3  4  1  6  7  3  5  1  4  0  2  1  4  2  4  6  6  1  2  2  5  6  6

generates a code of length 86 over Z8 who´s minimum homogenous weight is 84.

Homogenous weight enumerator: w(x)=1x^0+244x^84+96x^86+131x^88+32x^92+2x^96+4x^100+1x^104+1x^112

The gray image is a code over GF(2) with n=344, k=9 and d=168.
This code was found by Heurico 1.16 in 76.7 seconds.