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

generates a code of length 79 over Z8 who´s minimum homogenous weight is 70.

Homogenous weight enumerator: w(x)=1x^0+123x^70+80x^71+379x^72+232x^73+605x^74+320x^75+789x^76+580x^77+753x^78+616x^79+777x^80+620x^81+660x^82+336x^83+548x^84+220x^85+236x^86+56x^87+113x^88+12x^89+62x^90+32x^92+16x^94+14x^96+9x^98+2x^100+1x^108

The gray image is a code over GF(2) with n=316, k=13 and d=140.
This code was found by Heurico 1.16 in 3.84 seconds.