The generator matrix

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

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

Homogenous weight enumerator: w(x)=1x^0+207x^34+384x^35+654x^36+648x^37+949x^38+792x^39+1083x^40+784x^41+857x^42+608x^43+591x^44+280x^45+219x^46+72x^47+36x^48+16x^49+8x^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 1.11 in 0.663 seconds.