The generator matrix

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

generates a code of length 87 over Z8 who´s minimum homogenous weight is 86.

Homogenous weight enumerator: w(x)=1x^0+180x^86+27x^88+32x^90+12x^94+2x^96+1x^104+1x^112

The gray image is a code over GF(2) with n=348, k=8 and d=172.
This code was found by Heurico 1.16 in 0.4 seconds.