The roots of polynomial $ p(v) $ are:
$$ \begin{aligned}v_1 &= 3285.5831\\[1 em]v_2 &= -9.354+247.749i\\[1 em]v_3 &= -9.354-247.749i \end{aligned} $$Polynomial $ 8v^3-26135v^2+v-1615640648 $ has no rational roots that can be found using Rational Root Test, so the roots were found using qubic formulas.