DIY big block intake manifold

plenum on my 6 intake ended up the displacement of the motor, 225! That was for a dry intake with a formula that was online. Wet intake, no idea. Id keep it as free flowing as possible. You dont want A/F making right angle turns as you lose suspension. Drys are totally different..they can go though a maze and still work. Slightly larger runners are acceptable if you blend them at the flange. Use fuel proof epoxy. Duals would be nice as you could position the carbs over the 2 groupings of runners for better distribution, even dual 2bbls or a split Dominator. Probably not in your cards. 3-7400 probably wont mind the single 4 over 10 inches of intake runners.