Take a pass on the Clyde Norwood reproduction intake manifold. I had an original manifold which I sold . It is really a race manifold and not a street manifold. The PES intake requires the use of Clyde's specific bolt in lumps. Works great for the intended use but no so much for a street car or a drag motor, not really. I ran that intake on an drag altered and it was a bear to run on gas. Just did not run well on gas for that kind of use. Really, it was designed for round track use where the manifold is at its best with the motor running at a certain sustained rpm. The only time it ran well at the drag strip was on alcohol. I never tried it on a street motor but I cant imagine that would be an easy project.
One of the more interesting intakes I have seen was a modified Clifford 3X2. At one time Clifford made a 3X2 cast aluminum ram intake. Really an independent runner manifold originally designed for three Rochester's but most ran them with three holley 2300 carbs (500 0r 350 cfm). In original form it was a strictly race manifold. The one that I saw many years ago was on a 50s pickup truck (and have a photo of it somewhere. I thought it was so cool that I ended up with one myself for a future project. Just did not get around to the project, lol) Jim Tinsmith made a rectangle box for the top, thus creating a plenum. Set it up for three Rochester 2 bbls with progressive linkage. Fit under the hood of the truck. Man did that manifold run well. So you have that option as well, use an existing manifold and modify it. Like I said before nothing ventured nothing gained and life is short so go build an intake if you want and see how it comes out. I did and it was a good learning experience.
Last edited by Dragsix; 02/12/2018 7:22 PM.