The generator matrix

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

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

Homogenous weight enumerator: w(x)=1x^0+222x^63+427x^64+526x^65+594x^66+832x^67+684x^68+740x^69+688x^70+692x^71+513x^72+588x^73+424x^74+384x^75+315x^76+210x^77+112x^78+102x^79+59x^80+44x^81+22x^82+8x^83+1x^84+2x^85+2x^89

The gray image is a code over GF(2) with n=280, k=13 and d=126.
This code was found by Heurico 1.11 in 1.67 seconds.