Reher-Morrison's 1" thick carburetor spacers are CNC machined from 6061-T6 aluminum. These open hole spacers are tapered, ( funnel shaped), to create a venturi effect. This ram-air effect increases the air and fuel entering the cylinders and provides a substantial increase in torque and horsepower.
They are available for both 4150 and 4500 style carburetors.
While providing more power on their own, these tapered spacers produce an even greater performance improvement when used in conjunction with our anti-reversion plates.
Also see:
•Induction
•Anti-Reversion Plates
•Carburetor Gaskets