The generator matrix

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

generates a code of length 60 over Z8 who´s minimum homogenous weight is 54.

Homogenous weight enumerator: w(x)=1x^0+114x^54+346x^55+289x^56+494x^57+409x^58+434x^59+344x^60+340x^61+233x^62+294x^63+203x^64+230x^65+120x^66+118x^67+41x^68+40x^69+35x^70+8x^71+1x^72+1x^74+1x^76

The gray image is a code over GF(2) with n=240, k=12 and d=108.
This code was found by Heurico 1.16 in 0.503 seconds.