1in. Super Sucker L/W Alm. Carb. Spacer - 4150

The 1in. Super Sucker L/W Alm. Carb. Spacer - 4150 from HIGH VELOCITY HEADS is a precision aluminum carburetor spacer designed for engine builders and performance mechanics seeking improved fuel atomization and consistent air distribution. This lightweight aluminum spacer sits between your 4150 square-bore carburetor and intake manifold, creating additional volume that enhances fuel vaporization and allows better charge stratification across all cylinders. Whether you're tuning a street engine, bracket racer, or vintage hot rod, this spacer addresses a fundamental engine-building challenge: achieving uniform fuel distribution without sacrificing throttle response.

Constructed from lightweight aluminum and polished for durability and heat management, the Super Sucker spacer features a 1-inch thickness and 4-hole square-bore configuration optimized for standard 4150-pattern carburetors. The expanded plenum volume reduces fuel droplet coalescence, meaning atomized fuel stays suspended longer before reaching the intake ports—critical for even distribution across multiple cylinders at varying engine loads. At just 0.92 lbs, the aluminum construction eliminates weight penalty while the polished finish resists corrosion and promotes efficient heat dissipation away from fuel mixtures. The engineering principle behind this design has proven effective in competition environments where consistency and reproducibility are non-negotiable.

This spacer benefits carburetor-equipped engines from street applications through vintage racing, particularly where manifold port timing or uneven cylinder charging has caused lean conditions or stumble. Installation requires basic gasket surface preparation and torque-sequence awareness—use quality gasket material on both sides and follow intake bolt specs for your specific engine platform. The 4150 square-bore pattern ensures compatibility with the vast majority of Holley carburetors and equivalent aftermarket units. Mechanics frequently pair super-sucker spacers with tuning adjustments to idle circuits and primary boosters, confirming that spacer selection directly influences jetting and power band characteristics across the RPM range.