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

generates a code of length 84 over Z8 who´s minimum homogenous weight is 80.

Homogenous weight enumerator: w(x)=1x^0+39x^80+64x^82+64x^83+191x^84+64x^85+48x^86+24x^88+16x^90+1x^164

The gray image is a code over GF(2) with n=336, k=9 and d=160.
This code was found by Heurico 1.16 in 0.29 seconds.