The generator matrix

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

generates a code of length 80 over Z8 who´s minimum homogenous weight is 70.

Homogenous weight enumerator: w(x)=1x^0+56x^70+212x^71+363x^72+482x^73+675x^74+896x^75+1072x^76+1160x^77+1389x^78+1488x^79+1393x^80+1316x^81+1139x^82+1052x^83+982x^84+882x^85+619x^86+430x^87+295x^88+162x^89+125x^90+74x^91+50x^92+20x^93+15x^94+6x^95+4x^96+8x^97+13x^98+2x^99+2x^101+1x^102

The gray image is a code over GF(2) with n=320, k=14 and d=140.
This code was found by Heurico 1.16 in 12.8 seconds.