The generator matrix

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

generates a code of length 84 over Z8 who´s minimum homogenous weight is 76.

Homogenous weight enumerator: w(x)=1x^0+132x^76+322x^77+426x^78+518x^79+619x^80+686x^81+652x^82+632x^83+648x^84+626x^85+590x^86+470x^87+448x^88+452x^89+286x^90+258x^91+162x^92+68x^93+84x^94+38x^95+30x^96+14x^97+8x^98+2x^99+6x^100+4x^101+2x^103+2x^104+4x^105+2x^106

The gray image is a code over GF(2) with n=336, k=13 and d=152.
This code was found by Heurico 1.16 in 3.25 seconds.