The generator matrix

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

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

Homogenous weight enumerator: w(x)=1x^0+72x^76+260x^77+477x^78+590x^79+655x^80+694x^81+727x^82+640x^83+610x^84+682x^85+456x^86+432x^87+472x^88+344x^89+323x^90+252x^91+157x^92+130x^93+89x^94+50x^95+46x^96+14x^97+8x^98+4x^99+3x^100+4x^101

The gray image is a code over GF(2) with n=336, k=13 and d=152.
This code was found by Heurico 1.11 in 1.82 seconds.