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I am a newbie at supercharging, and know practically nothing about this subject, but I charged ahead anyway, building a home-brew, low-boost (10 psi) Vortech blow thru system for my almost stock 360 Magnum (in a 3,400-pound (no driver) '72 Valiant 4-door. I have a 214/218 @ .050" lift cam from Hughes that lifts .525." It has 116 degrees of lobe separation.
I bought a Chinese "Air Gap"-type intake manifold when Edelbrock was advertisisng the REAL Air Gap, but nobody had one for sale. That went on for months and I needed a manifold... so, I gritted my teeth and bought the almost-a-copy.
Anyway, it's a dual-plane forced induction system with a Vortech V-1, S-trim blower that makes 10 pounds of boost. It went from 260 RWHP to 445, by adding the blower, the intake (N-A, it had a M-P dual plane) and going to TTI headers from the N-A engine's early 340 cast manifolds. Drag strip ET's went from 13.35 to mid 11's, while the MPH went from 102 to 116... a different car.
I have access to a M-P single plane manifold, now. So, I'm considering trying it. Do you think it will improve this package? I'm thinking that the flywheel HP may be around 520 with the current setup.
Here's the chassis dyno test and picture of the motor.... So far, no one's been electrocuted...