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  1  2  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  1  1  1  2  2  1  1  1
 0  2  0  2  0  0  6  6  0  0  2  6  0  0  6  2  0  2  0  2  0  6  0  6  0  4  6  6  4  2  4  2  4  4  4  2  6  4  2  0  2  4  2  4  6  4  4  6  6  4  6  4  2  0  6  4  6  4  4  2  2  4  0  6  2  0  4  2  6  4  2  0  6  0
 0  0  2  2  0  6  6  0  0  6  2  0  0  2  6  0  4  6  6  4  4  2  2  4  4  2  4  6  6  4  4  2  4  0  2  2  0  0  4  2  6  0  6  2  4  0  2  0  6  4  2  6  4  4  2  6  4  4  6  6  0  0  6  2  0  0  2  2  0  2  2  0  4  0
 0  0  0  4  0  0  4  0  4  4  0  4  4  4  0  4  4  4  0  0  4  4  0  0  0  4  4  0  4  4  0  0  0  0  4  4  0  4  0  4  0  4  0  0  4  0  0  4  4  4  4  4  4  0  0  0  0  4  0  4  0  0  4  0  4  0  0  0  0  0  4  4  4  0
 0  0  0  0  4  4  4  4  4  4  0  4  0  0  4  0  0  0  0  0  4  4  4  4  4  4  0  0  0  4  0  4  4  4  0  4  0  0  4  4  4  4  0  0  4  0  4  0  0  0  0  4  0  0  0  4  0  4  0  4  4  4  0  4  4  0  0  0  4  4  4  0  0  0

generates a code of length 74 over Z8 who´s minimum homogenous weight is 70.

Homogenous weight enumerator: w(x)=1x^0+25x^70+22x^71+36x^72+108x^73+131x^74+104x^75+40x^76+20x^77+18x^78+2x^79+3x^80+1x^82+1x^142

The gray image is a code over GF(2) with n=296, k=9 and d=140.
This code was found by Heurico 1.16 in 0.184 seconds.