Oh,it takes the same technique to make a fast 350 as a fast 6 cylinder,proper parts and careful assembly.
A big inch modified 6 is a fine engine and even a hopped up 235 is ok,only 160 hp maybe,but if you do the right stuff,have a strong torque band,it'll feel more powerful that it is.
Slowgo61,sounds like your project will be a load for any 235 to haul in todays traffic.A 292 would be an easy swap and provide far more pulling power and probably better fuel mileage.
If your out to impress the natives,hell, most of them don't know what the're lookin at.They eyeball the GMC 302 in my 37 with headers and a Holley 4bbl stickin off the left side.Then they ask if that's the original "flathead 6"
