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

generates a code of length 80 over Z8 who´s minimum homogenous weight is 76.

Homogenous weight enumerator: w(x)=1x^0+44x^76+16x^77+42x^78+48x^79+207x^80+48x^81+52x^82+16x^83+32x^84+2x^86+3x^88+1x^152

The gray image is a code over GF(2) with n=320, k=9 and d=152.
This code was found by Heurico 1.16 in 0.244 seconds.