The generator matrix

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

generates a code of length 68 over Z8 who´s minimum homogenous weight is 66.

Homogenous weight enumerator: w(x)=1x^0+83x^66+32x^67+55x^68+32x^69+18x^70+11x^72+19x^74+5x^76

The gray image is a code over GF(2) with n=272, k=8 and d=132.
This code was found by Heurico 1.16 in 0.12 seconds.