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Speedwerx Hyperflow 1-3/4" - 1-1/2" Tapered Holley 4150 Carb Spacer
Similar to the HVH Super Sucker, Wilson Manifolds, or other contoured spacers, the Speedwerx Hyperflow Spacers take it one step further and extended the divider below the base of the spacer into the plenum area of the intake. This is especially useful at part throttle since it redirects and straightens out the flow that's coming off the throttle blades at an angle, increasing the air/fuel velocity through the carb and improving the booster to venturi signal for superior power, torque, and throttle response. The extended divider design also gives you the benefits of a 3/4" taller spacer without the actual height increase, which is great where racing rules or hood clearance issues don't allow for a taller spacer. The spacer is Made in the USA from lightweight CNC machined aluminum, and is tapered from approximately 1-3/4" to 1-1/2" back to front on the right side, and 1-3/8" to 1-1/8" on the left side so the carb is tipped towards the left front as we usually install it- this is ideal for circle track cars that roll over to the right rear since this design helps keep the carb level and the jets submerged to prevent loss of power under hard cornering. It can also be used for drag racing, street, or other applications using Holley 4150 square bore carburetors on single plane, open plenum intake manifolds and since it is a square bore design, you can install it to tip any one of the four corners down if needed in other applications. Race proven on our Dirt Track Late Model and Modified engines!
These items are intended for closed-course competition only. Alternation of emissions-related components can constitute violation of federal and/or state laws. Substantial fines and penalties can result if used for other than closed-course competition use.