The generator matrix

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

generates a code of length 80 over Z8 who´s minimum homogenous weight is 71.

Homogenous weight enumerator: w(x)=1x^0+84x^71+198x^72+254x^73+408x^74+464x^75+500x^76+668x^77+653x^78+692x^79+652x^80+604x^81+647x^82+544x^83+523x^84+404x^85+261x^86+204x^87+140x^88+98x^89+62x^90+48x^91+24x^92+16x^93+11x^94+12x^95+9x^96+4x^97+3x^98+1x^100+3x^102

The gray image is a code over GF(2) with n=320, k=13 and d=142.
This code was found by Heurico 1.16 in 3.91 seconds.