Machined from 6061-T6 billet aluminum, this adaptor is used to install any Autolite, Holley, or Motorcraft 2V carb (up to 351 CFM) on a SMALL LOG cylinder head with a 1.5" carb bore. The adaptor includes a custom billet insert to improve air flow and horse power, as well as two stainless steel Allen socket screws for mounting (carb studs and spacers are optional). Our adaptors offer improved hood clearance due to their slim design, and they orientate the carb parallel to the crankshaft for improved fuel distribution. Gaskets not included. No machining required.

Please read our tech article Selecting the Right Carb before buying a carburetor or an adaptor. This adaptor supports carbs up to 351 CFM, and will not work with larger carbs. The reason for this is simple. A small log head simply doesn't flow enough air to support a larger carb, such as a Holley 500 CFM. If you insist on running a larger carb, we strongly recommend upgrading to a large log 250ci cylinder head.

While your here, make sure you check out our Air Cleaners and Cold Air Induction Kits.

In the photos below you can see how the insert slips into the adaptor after the adaptor is mounted to the manifold using the stainless steel Allen head cap screws. As such the insert not only funnels the air into the carb bore, it also conceals the Allen head screws to improve airflow and horsepower.