The generator matrix

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

generates a code of length 40 over Z8 who´s minimum homogenous weight is 34.

Homogenous weight enumerator: w(x)=1x^0+176x^34+372x^35+737x^36+600x^37+1005x^38+828x^39+938x^40+820x^41+867x^42+636x^43+592x^44+272x^45+211x^46+52x^47+65x^48+4x^49+13x^50+3x^52

The gray image is a code over GF(2) with n=160, k=13 and d=68.
This code was found by Heurico 1.16 in 1.13 seconds.