The generator matrix

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

generates a code of length 86 over Z8 who´s minimum homogenous weight is 78.

Homogenous weight enumerator: w(x)=1x^0+163x^78+196x^79+531x^80+372x^81+841x^82+504x^83+889x^84+580x^85+707x^86+476x^87+671x^88+396x^89+564x^90+268x^91+338x^92+156x^93+215x^94+80x^95+108x^96+32x^97+51x^98+12x^99+13x^100+15x^102+9x^104+4x^110

The gray image is a code over GF(2) with n=344, k=13 and d=156.
This code was found by Heurico 1.16 in 3.44 seconds.