The generator matrix

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

generates a code of length 74 over Z8 who´s minimum homogenous weight is 73.

Homogenous weight enumerator: w(x)=1x^0+20x^73+70x^74+24x^75+1x^76+6x^78+1x^80+4x^81+1x^84

The gray image is a code over GF(2) with n=296, k=7 and d=146.
This code was found by Heurico 1.16 in 0.195 seconds.