The generator matrix

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

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

Homogenous weight enumerator: w(x)=1x^0+150x^34+100x^35+334x^36+288x^37+554x^38+372x^39+578x^40+400x^41+484x^42+284x^43+279x^44+80x^45+108x^46+12x^47+48x^48+14x^50+7x^52+2x^54+1x^56

The gray image is a code over GF(2) with n=160, k=12 and d=68.
This code was found by Heurico 1.16 in 0.464 seconds.