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

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

Homogenous weight enumerator: w(x)=1x^0+116x^70+324x^71+624x^72+850x^73+878x^74+1088x^75+1219x^76+1178x^77+1409x^78+1436x^79+1291x^80+1210x^81+1080x^82+1020x^83+794x^84+638x^85+460x^86+284x^87+200x^88+116x^89+86x^90+32x^91+23x^92+8x^93+3x^94+4x^95+8x^96+4x^99

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 11.4 seconds.