The generator matrix

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

generates a code of length 70 over Z8 who´s minimum homogenous weight is 63.

Homogenous weight enumerator: w(x)=1x^0+256x^63+336x^64+690x^65+505x^66+862x^67+555x^68+870x^69+501x^70+796x^71+440x^72+778x^73+330x^74+472x^75+210x^76+242x^77+122x^78+100x^79+53x^80+44x^81+13x^82+10x^83+3x^84+1x^86+2x^88

The gray image is a code over GF(2) with n=280, k=13 and d=126.
This code was found by Heurico 1.16 in 2.35 seconds.