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The air flowing under the plenum provides a cooler charge for the incoming air with less heat transfer from the engine
Our dual plane big block manifold is now available with rectangular ports
Made from CNC machined billet steel for heady duty applications
which prevent galling
050 effectively decreasing spring pressure
1" Aluminum 4150 CNC Machined Carburetor Spacer Square Bore 4 Port - Blue The air flowing under theIndividually milled from super durable 6061 T6 aluminum billets, these CNC machined Speedmaster carburator spacers can handle anything your vehicle can dish out. They're so tough, they're guaranteed for life. The precise design of these Speedmaster carburetor spacers provides a smooth transition of fuel from the carburetor to the intake manifold, to increase flow for more performance. They also help to insulate the carburetor from engine heat and
