Aluminum Carb Adapter Only Holley to Quadrajet Q-Jet and Spreadbore [2692] Get up to four degrees

Get up to four degrees of timing adjustment with Speedmaster adjustable timing pointers

Compatible with Gas

which can create excessive amounts of vacuum and pressure in the oil pan

They're precision-machined from T6-106 billet aluminum

Aluminum Carb Adapter Only Holley to Quadrajet Q-Jet and Spreadbore [2692] Get up to four degreesSpeedmaster carburetor adapters are designed to allow you to mount most any carburetor on most any manifold, to save you the expense of buying a different manifold or carburetor. Made from high quality cast aluminum, these adapters provide a smooth transition from carb to intake for trouble free operation.