The generator matrix

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

generates a code of length 70 over Z8 who´s minimum homogenous weight is 64.

Homogenous weight enumerator: w(x)=1x^0+203x^64+32x^65+220x^66+96x^67+250x^68+128x^69+200x^70+128x^71+258x^72+96x^73+220x^74+32x^75+162x^76+13x^80+4x^84+4x^88+1x^112

The gray image is a code over GF(2) with n=280, k=11 and d=128.
This code was found by Heurico 1.16 in 8.48 seconds.