The generator matrix

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

generates a code of length 74 over Z8 who´s minimum homogenous weight is 64.

Homogenous weight enumerator: w(x)=1x^0+359x^64+744x^65+1460x^66+1944x^67+2967x^68+2992x^69+4140x^70+4252x^71+5116x^72+5348x^73+6440x^74+5520x^75+5721x^76+4272x^77+4310x^78+3228x^79+2445x^80+1700x^81+1240x^82+512x^83+466x^84+168x^85+94x^86+32x^87+37x^88+8x^89+8x^90+6x^92+4x^94+2x^96

The gray image is a code over GF(2) with n=296, k=16 and d=128.
This code was found by Heurico 1.11 in 92 seconds.