The generator matrix

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

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

Homogenous weight enumerator: w(x)=1x^0+235x^70+228x^71+673x^72+576x^73+1141x^74+712x^75+1573x^76+1016x^77+1699x^78+1140x^79+1642x^80+976x^81+1294x^82+712x^83+936x^84+556x^85+629x^86+144x^87+235x^88+72x^89+89x^90+8x^91+51x^92+4x^93+29x^94+9x^96+4x^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 13 seconds.