The generator matrix

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

generates a code of length 43 over Z8 who´s minimum homogenous weight is 40.

Homogenous weight enumerator: w(x)=1x^0+34x^40+24x^42+128x^43+48x^44+8x^46+12x^48+1x^80

The gray image is a code over GF(2) with n=172, k=8 and d=80.
This code was found by Heurico 1.16 in 0.0287 seconds.