Dual Carb Adapter Polished 671/871

The Blower Drive Service Dual Carb Adapter Polished 671/871 (Model CA-9025) is a precision-engineered supercharger top plate designed for dual-carburettor square bore configurations. This polished aluminum adapter serves as the critical intake manifold interface for 6-71 and 8-71 supercharger applications, facilitating optimal fuel and air distribution to high-displacement engines in performance and racing environments.

Constructed from aluminum and finished to a polished state, the CA-9025 adapter minimizes turbulence at the carburettor-to-blower transition, reducing restriction and supporting consistent boost delivery. The dual-carb square bore design accommodates two separate fuel delivery sources, a configuration favored in vintage drag racing and street rod builds where traditional single-carb setups prove insufficient. Weighing 4.06 lbs and measuring 7.45 x 1.35 x 15.45 inches, the adapter integrates seamlessly with standard 6-71 and 8-71 positive displacement blower housings. The polished finish provides both aesthetic appeal and corrosion resistance, critical for engine bays exposed to heat cycling and moisture.

This component addresses the specific needs of engine builders and enthusiasts restoring or upgrading vintage supercharger systems. Whether supporting a small-block Chevy in a drag-strip application or a big-block marine engine, the dual-carb adapter transfers power reliably when matched with correct carburettor jetting and blower pulley sizing. Blower Drive Service is established in the performance engine community for precision machining and fitment accuracy, making this OEM-equivalent part a trusted choice for rebuilds requiring original specifications or close-tolerance replacements.