The generator matrix

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

generates a code of length 90 over Z8 who´s minimum homogenous weight is 84.

Homogenous weight enumerator: w(x)=1x^0+269x^84+316x^85+408x^86+376x^87+501x^88+368x^89+328x^90+264x^91+228x^92+172x^93+176x^94+104x^95+198x^96+76x^97+74x^98+68x^99+50x^100+16x^101+52x^102+16x^103+16x^104+12x^105+2x^106+4x^107+1x^108

The gray image is a code over GF(2) with n=360, k=12 and d=168.
This code was found by Heurico 1.11 in 1.67 seconds.