4-Hole Plenum Design 4-bbl Carburetor Spacers
The purpose behind Moroso's (or any other) carburetor spacer is to extend the length of the intake mixture column to improve air/fuel distribution. There are two different styles of spacers with distinctively different benefits. The open plenum design increases plenum volume for improved high rpm power, while the 4-hole designs increase the air/fuel mixture velocity for improved low-speed and mid-range torque. Fully CNC machined from 6061-T6 billet aluminum to extremely accurate specifications.
WARNING: Motor vehicles contain fuel, oils and fluids, battery posts, terminals and related accessories which contain lead and lead compounds and other chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. These chemicals are found in vehicles, vehicle parts and accessories, both new and as replacements. When being serviced, these vehicles generate used oil, waste fluids, grease, fumes and particulates, all known to the State of California to cause cancer, birth defects, and reproductive harm.
WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Some examples of these chemicals are: lead from lead-based paints, crystalline silica from bricks and cement and other masonry products, and arsenic and chromium from chemically treated lumber. Your risk from exposure to these chemicals varies, depending on how often you do this type of work. To reduce your exposure, work in a well-ventilated area and with approved safety equipment, such as dust masks that are specially designed to filter out microscopic particles.
WARNING: The wires of these products contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.