The generator matrix

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

generates a code of length 40 over Z8 who´s minimum homogenous weight is 38.

Homogenous weight enumerator: w(x)=1x^0+35x^38+68x^39+61x^40+56x^41+19x^42+4x^43+9x^44+1x^46+1x^52+1x^58

The gray image is a code over GF(2) with n=160, k=8 and d=76.
This code was found by Heurico 1.16 in 0.0141 seconds.