The generator matrix

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

generates a code of length 66 over Z8 who´s minimum homogenous weight is 54.

Homogenous weight enumerator: w(x)=1x^0+52x^54+244x^55+758x^56+1244x^57+2393x^58+3174x^59+4976x^60+5674x^61+8239x^62+8832x^63+11505x^64+11364x^65+13099x^66+11654x^67+12361x^68+9054x^69+8668x^70+5934x^71+4667x^72+2826x^73+2020x^74+1008x^75+611x^76+344x^77+204x^78+62x^79+65x^80+22x^81+12x^82+4x^83+1x^86

The gray image is a code over GF(2) with n=264, k=17 and d=108.
This code was found by Heurico 1.11 in 223 seconds.