The generator matrix

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

generates a code of length 84 over Z8 who´s minimum homogenous weight is 78.

Homogenous weight enumerator: w(x)=1x^0+153x^78+144x^79+217x^80+156x^81+200x^82+76x^83+208x^84+104x^85+190x^86+152x^87+160x^88+124x^89+82x^90+12x^91+35x^92+7x^94+13x^96+6x^98+4x^100+2x^102+1x^108+1x^128

The gray image is a code over GF(2) with n=336, k=11 and d=156.
This code was found by Heurico 1.16 in 0.514 seconds.