The generator matrix

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

generates a code of length 42 over Z8 who´s minimum homogenous weight is 40.

Homogenous weight enumerator: w(x)=1x^0+41x^40+50x^41+83x^42+44x^43+21x^44+2x^45+11x^46+1x^48+1x^54+1x^62

The gray image is a code over GF(2) with n=168, k=8 and d=80.
This code was found by Heurico 1.16 in 0.0167 seconds.