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

generates a code of length 69 over Z8 who´s minimum homogenous weight is 66.

Homogenous weight enumerator: w(x)=1x^0+20x^66+32x^67+47x^68+64x^69+36x^70+32x^71+15x^72+6x^74+1x^76+2x^98

The gray image is a code over GF(2) with n=276, k=8 and d=132.
This code was found by Heurico 1.16 in 19.4 seconds.