The generator matrix

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

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

Homogenous weight enumerator: w(x)=1x^0+118x^71+348x^72+550x^73+850x^74+934x^75+1198x^76+1130x^77+1399x^78+1194x^79+1424x^80+1182x^81+1237x^82+1064x^83+1027x^84+770x^85+696x^86+476x^87+313x^88+186x^89+157x^90+50x^91+33x^92+16x^93+12x^94+6x^96+6x^97+4x^99+2x^100+1x^102

The gray image is a code over GF(2) with n=320, k=14 and d=142.
This code was found by Heurico 1.16 in 11.6 seconds.