Q-Jet Carb Adapter 1in Thick Straight Bore

The Q-Jet Carb Adapter 1in Thick Straight Bore from WEHRS MACHINE is purpose-built for engine builders and hot rodders transitioning from classic Holley 2-barrel carburetors to modern spread-bore intake manifolds. This adapter bridges the gap between vintage carburetor technology and contemporary engine platforms, eliminating the need for costly manifold replacement when upgrading fuel delivery systems. Whether you're restoring a muscle car, building a street machine, or optimizing an existing engine combo, this adapter preserves your investment while unlocking compatibility with newer performance components.

Machined from aluminum and finished in durable black anodize, the Q-Jet adapter features a 1-inch thickness that provides structural rigidity and proper carb mounting geometry for leak-free operation. The straight bore design ensures optimal fuel and air column alignment, critical for even distribution across intake runners and consistent idle quality. The two-hole mounting pattern accommodates standard 4150-style flange bolts, while the adapter's compact footprint (7.6 × 7.95 inches) maintains proper hood clearance on vehicles with tight engine bays. Weighing just 1.89 pounds, it adds minimal mass while delivering maximum functional reliability.

This adapter is ideal for Chevrolet small-block and big-block applications, LS conversions, and vintage Pontiac, Oldsmobile, and Buick engine swaps where spread-bore manifolds are already in place. Installation is straightforward: bolt the adapter between your existing intake and carburetor, torque fasteners to spec, and verify fuel line routing for clearance. Proper gasket selection (carb gaskets rated for your specific carb model) ensures no vacuum leaks or fuel weeping. Use with Holley 2-barrel carburetors and compatible Q-Jet units for maximum performance and tuning flexibility on classic and custom builds.