The generator matrix

 1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  2  2  0  2  1  0  1  2  1  1  1  1  1  1  1  1  1  1  2  2  2
 0  2  0  6  0  6  0  2  0  6  0  2  0  6  4  6  4  2  4  4  6  2  6  6  2  4  0  6  4  2  0  6  4  2  4  4  2  0  0  0
 0  0  4  0  0  0  4  0  0  4  0  4  4  4  4  4  4  4  4  0  0  0  4  0  4  0  4  4  0  0  4  0  0  4  4  0  4  0  4  0
 0  0  0  4  0  0  0  4  4  4  4  4  4  0  4  0  0  0  4  0  0  4  4  4  0  4  4  4  0  0  4  0  0  4  0  4  0  4  0  0
 0  0  0  0  4  4  4  4  4  0  0  4  0  4  4  0  0  4  0  4  0  0  0  4  0  0  4  4  0  4  4  0  4  0  4  4  0  4  4  0

generates a code of length 40 over Z8 who´s minimum homogenous weight is 37.

Homogenous weight enumerator: w(x)=1x^0+24x^37+54x^38+86x^40+32x^41+40x^42+8x^44+8x^45+1x^46+1x^48+1x^62

The gray image is a code over GF(2) with n=160, k=8 and d=74.
This code was found by Heurico 1.16 in 6.05 seconds.