HOLLEY/DOMINATOR CARB AD APTER

The HOLLEY/DOMINATOR CARB ADAPTER from Trans-Dapt is a precision carburetor spacer designed for engine builders and performance enthusiasts who need reliable intake manifold-to-carburetor compatibility across different platforms. This adapter solves a critical fitment challenge: matching modern Holley or Dominator carburetors to manifolds designed for different bore patterns or heights. Whether you're installing a performance fuel delivery system on a classic engine swap or optimizing carburetor positioning on a custom build, this spacer ensures proper sealing and alignment without costly manifold modifications.

Constructed from aluminum and featuring a 2.125-inch thickness, the HOLLEY/DOMINATOR CARB ADAPTER accommodates square-bore carburetor mounting patterns with an open design that maintains optimal fuel and air flow through the intake system. The open spacer configuration—rather than a sealed or restricted design—minimizes restriction in the carburetor throat, preserving the fuel atomization and metering characteristics of your chosen carb. Each adapter includes precision-cut gaskets and all necessary hardware, eliminating the need for sourcing sealing materials separately. The natural aluminum finish is corrosion-resistant and provides a clean appearance while allowing easy inspection of gasket sealing integrity during installation and maintenance.

This spacer is essential for street rodders, vintage drag racers, and engine builders tackling intake manifold adaption work on small-block and big-block engines. The 7.3 x 8.6-inch footprint integrates seamlessly with standard square-bore intake manifolds commonly found on classic muscle cars and modern hot rod builds. Installation requires only basic hand tools and attention to gasket alignment; torque fasteners in a star pattern to ensure even pressure distribution and eliminate vacuum leaks. The lightweight aluminum construction (2.32 lbs) has no meaningful impact on engine balance, making it ideal for both naturally aspirated and forced-induction applications where simplicity and reliability are non-negotiable.