The generator matrix

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

generates a code of length 74 over Z8 who´s minimum homogenous weight is 69.

Homogenous weight enumerator: w(x)=1x^0+176x^69+198x^70+284x^71+230x^72+216x^73+160x^74+174x^75+132x^76+104x^77+82x^78+78x^79+32x^80+54x^81+44x^82+30x^83+10x^84+24x^85+4x^86+10x^87+3x^88+2x^89

The gray image is a code over GF(2) with n=296, k=11 and d=138.
This code was found by Heurico 1.11 in 0.271 seconds.