The generator matrix

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

generates a code of length 81 over Z8 who´s minimum homogenous weight is 80.

Homogenous weight enumerator: w(x)=1x^0+12x^80+90x^81+12x^82+2x^84+4x^85+2x^86+1x^88+2x^89+1x^90+1x^98

The gray image is a code over GF(2) with n=324, k=7 and d=160.
This code was found by Heurico 1.16 in 0.171 seconds.