The generator matrix

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

generates a code of length 74 over Z8 who´s minimum homogenous weight is 67.

Homogenous weight enumerator: w(x)=1x^0+132x^67+222x^68+234x^69+346x^70+310x^71+318x^72+396x^73+344x^74+378x^75+310x^76+242x^77+316x^78+224x^79+112x^80+70x^81+30x^82+28x^83+16x^84+12x^85+18x^86+10x^87+8x^88+6x^89+6x^91+4x^92+1x^96+2x^98

The gray image is a code over GF(2) with n=296, k=12 and d=134.
This code was found by Heurico 1.16 in 64.1 seconds.