The generator matrix

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

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

Homogenous weight enumerator: w(x)=1x^0+82x^70+326x^71+598x^72+884x^73+882x^74+1138x^75+1195x^76+1408x^77+1257x^78+1402x^79+1195x^80+1258x^81+941x^82+1150x^83+748x^84+674x^85+438x^86+320x^87+244x^88+90x^89+64x^90+48x^91+13x^92+6x^93+11x^94+6x^96+5x^98

The gray image is a code over GF(2) with n=316, k=14 and d=140.
This code was found by Heurico 1.16 in 11.3 seconds.