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

generates a code of length 85 over Z8 who´s minimum homogenous weight is 84.

Homogenous weight enumerator: w(x)=1x^0+156x^84+64x^86+29x^88+1x^92+1x^96+2x^100+1x^104+1x^108

The gray image is a code over GF(2) with n=340, k=8 and d=168.
This code was found by Heurico 1.16 in 9.24 seconds.