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

generates a code of length 81 over Z8 who´s minimum homogenous weight is 77.

Homogenous weight enumerator: w(x)=1x^0+32x^77+16x^78+126x^80+192x^81+96x^82+32x^85+16x^86+1x^160

The gray image is a code over GF(2) with n=324, k=9 and d=154.
This code was found by Heurico 1.16 in 5.99 seconds.