The generator matrix

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

generates a code of length 85 over Z8 who´s minimum homogenous weight is 74.

Homogenous weight enumerator: w(x)=1x^0+106x^74+202x^75+580x^76+708x^77+1194x^78+1008x^79+2159x^80+1388x^81+2863x^82+1848x^83+3438x^84+2022x^85+3273x^86+1826x^87+3036x^88+1508x^89+2014x^90+1004x^91+1083x^92+428x^93+447x^94+220x^95+168x^96+80x^97+62x^98+32x^99+26x^100+10x^101+21x^102+2x^103+4x^104+2x^106+2x^107+1x^108+1x^110+1x^114

The gray image is a code over GF(2) with n=340, k=15 and d=148.
This code was found by Heurico 1.16 in 53.4 seconds.