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RE: Willy's Carburetor & Dyno Shop Restrictor Plates WCD8850 - Free Shipping on Orders Over $49 at Summit Racing
Ok so im confused, your title says its for a carbureted motor? It looks like an adapter plate between a quad carb and intake. Or maybe a plate for the throttle body? Also you say its only adjusted from the pit, is it adjusted by hand?
it is a 1 inch tall spacer that mounts between the carburetor and the intake manifold. by turning that knob it moves 2 plates in the middle that make the air holes smaller or larger so that you can restrict the air and fuel the engine can take in. The 2 plates slide in and out. By turning that knob you can actually turn it down to make the holes all 1/2 the size they are if you had it fully open.