The generator matrix

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

generates a code of length 40 over Z8 who´s minimum homogenous weight is 31.

Homogenous weight enumerator: w(x)=1x^0+240x^31+816x^32+1512x^33+3052x^34+5018x^35+7148x^36+10124x^37+13350x^38+15692x^39+16340x^40+16060x^41+13961x^42+10436x^43+7452x^44+4748x^45+2623x^46+1344x^47+639x^48+316x^49+131x^50+34x^51+20x^52+8x^53+3x^54+4x^55

The gray image is a code over GF(2) with n=160, k=17 and d=62.
This code was found by Heurico 1.11 in 117 seconds.