The generator matrix

 1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  2  2  2  2  2  2  2  1  1  1  1  1  1  1  1  2  1  1  1  1  1  1  1  1
 0  4  0  0  0  4  4  4  0  0  0  4  0  4  4  4  0  0  4  4  0  4  4  0  0  0  4  0  4  4  4  0  0  0  0  4  0  4  4  4
 0  0  4  0  4  4  4  0  0  0  4  4  4  4  0  0  0  4  4  0  4  4  0  0  0  4  4  4  4  0  0  0  0  0  4  4  4  4  0  0
 0  0  0  4  4  0  4  4  0  4  4  0  0  4  4  0  4  4  0  0  0  4  4  0  4  4  0  0  4  4  0  0  0  4  4  0  0  4  4  0

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

Homogenous weight enumerator: w(x)=1x^0+60x^40+2x^48+1x^64

The gray image is a code over GF(2) with n=160, k=6 and d=80.
This code was found by Heurico 1.16 in 0.0174 seconds.