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

generates a code of length 66 over Z8 who´s minimum homogenous weight is 64.

Homogenous weight enumerator: w(x)=1x^0+15x^64+94x^66+15x^68+2x^82+1x^100

The gray image is a code over GF(2) with n=264, k=7 and d=128.
This code was found by Heurico 1.16 in 0.0796 seconds.