The generator matrix

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

generates a code of length 87 over Z8 who´s minimum homogenous weight is 81.

Homogenous weight enumerator: w(x)=1x^0+296x^81+254x^82+484x^83+318x^84+476x^85+321x^86+392x^87+198x^88+338x^89+199x^90+188x^91+94x^92+146x^93+61x^94+116x^95+49x^96+74x^97+23x^98+24x^99+12x^100+10x^101+6x^102+12x^103+4x^105

The gray image is a code over GF(2) with n=348, k=12 and d=162.
This code was found by Heurico 1.16 in 26.8 seconds.