Hi-Velocity Stack

The MR. GASKET Hi-Velocity Stack is a polished aluminum velocity stack designed to optimize cold-air intake flow into your carburetor. Measuring 8.5 inches in diameter with a 5-inch height and 5.125-inch carburetor flange, this component delivers measurable improvements in volumetric efficiency by straightening and accelerating incoming air charge before it reaches the fuel metering circuit. For serious engine builders and carbureted performance enthusiasts, velocity stacks reduce turbulence and momentum losses that occur with conventional open-element air filters.

The polished aluminum construction provides both visual appeal and functional durability typical of quality fuel-system components. The 5-inch stack height balances intake velocity gain with hood clearance constraints found on most street and strip applications. The precisely machined 5.125-inch carburetor flange ensures repeatable, leak-free seating against standard four-barrel carburetors. At 0.7 pounds, the velocity stack adds minimal weight while contributing to more efficient combustion cycles at mid to high engine speeds where the straight-through design yields the greatest flow advantage.

This component is essential for carbureted drag racing, street performance, and engine swap applications where maximizing naturally aspirated airflow is critical. Hot rodders, circle-track racers, and engine builders installing or upgrading carbureted fuel systems rely on velocity stacks to recover lost induction efficiency. The MR. GASKET design fits standard carburetor mounting on small-block and big-block applications, making it a direct upgrade from flat-top air cleaners or inadequate intake designs. Installation requires only standard carburetor fasteners and basic hand tools.