The generator matrix

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

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

Homogenous weight enumerator: w(x)=1x^0+48x^70+7x^72+6x^76+2x^80

The gray image is a code over GF(2) with n=280, k=6 and d=140.
This code was found by Heurico 1.16 in 0.0642 seconds.