The generator matrix

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

generates a code of length 84 over Z8 who´s minimum homogenous weight is 74.

Homogenous weight enumerator: w(x)=1x^0+150x^74+470x^75+825x^76+1156x^77+1577x^78+1620x^79+2109x^80+2208x^81+2627x^82+2388x^83+2934x^84+2330x^85+2710x^86+2052x^87+2005x^88+1514x^89+1420x^90+956x^91+705x^92+414x^93+249x^94+182x^95+58x^96+54x^97+35x^98+10x^99+4x^101+2x^103+3x^104

The gray image is a code over GF(2) with n=336, k=15 and d=148.
This code was found by Heurico 1.11 in 19.7 seconds.