The generator matrix

 1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  2  4  2  2  2  2  1  1  2  2  2  2  4  1  4  2  1  1  1  4  1  0  1  1  2  1  4  0  1  2  2  1  1  1  1  1  2  2  1  2  2  1  1
 0  2  0  0  0  0  0  0  0  0  4  2  6  2  4  0  2  2  2  2  0  6  6  6  6  6  0  4  2  6  2  4  0  6  2  4  0  4  2  2  4  2  6  2  4  4  2  4  4  4  4  2  2  6  4  2  0  0  6  4  6  6  0  2  0  4  4  6  0  0  0  2  0  4  2  0  2  6  4  2  0
 0  0  2  0  0  0  0  0  0  0  6  4  2  2  2  2  2  6  4  0  6  4  6  0  2  0  6  6  4  6  6  6  2  0  0  4  6  0  4  2  2  6  6  6  6  2  4  0  2  4  2  2  2  4  2  6  4  2  0  2  4  6  2  6  2  2  6  4  6  2  6  0  6  2  0  4  2  6  2  6  0
 0  0  0  2  0  0  4  6  2  2  2  6  4  2  2  0  0  6  2  0  4  4  6  2  0  4  2  2  6  4  2  0  0  0  6  6  0  4  2  0  2  2  4  0  0  2  4  4  6  2  4  0  0  0  2  6  2  2  6  4  2  0  6  2  6  6  0  6  4  6  0  6  4  6  6  6  0  0  2  2  0
 0  0  0  0  2  0  6  6  6  4  0  0  0  0  4  0  2  6  2  6  2  4  0  6  2  6  6  2  4  0  6  2  2  6  4  4  0  4  4  4  6  2  2  6  2  4  6  6  4  6  0  0  0  2  6  4  2  6  0  2  0  6  2  0  0  6  6  4  6  6  6  2  4  4  2  0  4  2  0  6  0
 0  0  0  0  0  2  2  4  6  2  0  0  0  0  6  2  6  6  4  0  2  2  2  6  0  2  2  4  2  6  0  4  2  2  2  4  4  0  0  4  4  0  4  2  0  0  0  4  2  4  6  6  2  6  6  0  6  6  6  2  0  2  0  2  4  2  6  6  2  4  6  6  4  6  4  2  2  2  2  6  0

generates a code of length 81 over Z8 who´s minimum homogenous weight is 70.

Homogenous weight enumerator: w(x)=1x^0+60x^70+84x^71+163x^72+212x^73+298x^74+302x^75+440x^76+508x^77+591x^78+660x^79+543x^80+676x^81+605x^82+652x^83+545x^84+454x^85+326x^86+246x^87+204x^88+130x^89+148x^90+72x^91+91x^92+54x^93+43x^94+26x^95+25x^96+14x^97+8x^98+6x^99+4x^100+1x^114

The gray image is a code over GF(2) with n=324, k=13 and d=140.
This code was found by Heurico 1.16 in 5.78 seconds.