The generator matrix

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

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

Homogenous weight enumerator: w(x)=1x^0+49x^74+294x^75+178x^76+538x^77+169x^78+618x^79+168x^80+474x^81+144x^82+430x^83+95x^84+344x^85+117x^86+192x^87+46x^88+90x^89+22x^90+52x^91+16x^92+26x^93+10x^94+10x^95+5x^96+1x^98+4x^99+3x^100

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 0.914 seconds.