The generator matrix

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

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

Homogenous weight enumerator: w(x)=1x^0+136x^77+176x^78+124x^79+124x^80+90x^81+88x^82+68x^83+55x^84+38x^85+43x^86+20x^87+2x^88+10x^89+11x^90+8x^91+9x^92+14x^93+1x^94+4x^95+1x^98+1x^104

The gray image is a code over GF(2) with n=324, k=10 and d=154.
This code was found by Heurico 1.16 in 0.221 seconds.