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

generates a code of length 85 over Z8 who´s minimum homogenous weight is 70.

Homogenous weight enumerator: w(x)=1x^0+64x^70+123x^72+4x^73+143x^74+20x^75+146x^76+106x^77+146x^78+162x^79+143x^80+240x^81+136x^82+1346x^83+145x^84+2366x^85+143x^86+1380x^87+140x^88+260x^89+132x^90+136x^91+150x^92+86x^93+138x^94+26x^95+104x^96+8x^97+68x^98+2x^99+45x^100+2x^101+35x^102+15x^104+15x^106+10x^108+2x^110+2x^112+1x^114+1x^130

The gray image is a code over GF(2) with n=340, k=13 and d=140.
This code was found by Heurico 1.16 in 10.5 seconds.