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

generates a code of length 80 over Z8 who´s minimum homogenous weight is 74.

Homogenous weight enumerator: w(x)=1x^0+28x^74+64x^75+43x^76+44x^77+74x^78+152x^79+229x^80+144x^81+68x^82+56x^83+40x^84+36x^85+18x^86+16x^87+6x^88+4x^90+1x^156

The gray image is a code over GF(2) with n=320, k=10 and d=148.
This code was found by Heurico 1.16 in 0.3 seconds.