/6 cars had the smallest lines, v8 cars hve 3/8
i run 1/2 some people say its to much, comparing it , to FI cars that runn 600hp on 3/8, but not taking into consideration the PSI from FI pumps
ill be around 600ish HP with the new stroker build for my 71, 1/2 lin, at 7psi with an internally...