For Chevy Intake Manifold Adapter TBI Fuel Injection to 4Barrel Manifold Holley

For Chevy Small Block 1.75" Bore TBI. Tapered bores adapt wider TBI to narrow Holley/Edelbrock 4bbl manifold—unlike generic adapters that cause poor performance. This adapts a small block 1.75" bore Chevy T.B.I. (Throttle body injection) unit to a Holley pattern 4 barrel manifold.