The generator matrix

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

generates a code of length 81 over Z8 who´s minimum homogenous weight is 74.

Homogenous weight enumerator: w(x)=1x^0+170x^74+136x^75+384x^76+240x^77+442x^78+288x^79+418x^80+256x^81+320x^82+232x^83+307x^84+240x^85+294x^86+112x^87+87x^88+32x^89+54x^90+34x^92+22x^94+12x^96+8x^98+3x^100+2x^102+1x^104+1x^112

The gray image is a code over GF(2) with n=324, k=12 and d=148.
This code was found by Heurico 1.16 in 1.15 seconds.