The generator matrix

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

generates a code of length 81 over Z8 who´s minimum homogenous weight is 78.

Homogenous weight enumerator: w(x)=1x^0+105x^78+167x^80+138x^82+76x^84+13x^86+9x^88+1x^92+1x^100+1x^120

The gray image is a code over GF(2) with n=324, k=9 and d=156.
This code was found by Heurico 1.16 in 0.454 seconds.