The generator matrix

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

generates a code of length 85 over Z8 who´s minimum homogenous weight is 78.

Homogenous weight enumerator: w(x)=1x^0+265x^78+578x^80+678x^82+648x^84+606x^86+584x^88+364x^90+212x^92+81x^94+20x^96+34x^98+2x^100+16x^102+4x^106+2x^108+1x^112

The gray image is a code over GF(2) with n=340, k=12 and d=156.
This code was found by Heurico 1.16 in 79.3 seconds.