This adapter is used to install Holley and Autolite 2BBL carbs onto the US log intake manifolds. Offered in two sizes, the small 1.5" hole (red), and the large 1.75" hole (blue). The small hole adaptor is available in cast (pictured above) or red anodized billet aluminum. The large hole adaptor is available in blue anodized billet aluminum only. 

These adaptors offer improved hood clearance due to the slim design, and orientate the carb paralell to the crackshaft for the best fuel distribution possible with an adaptor. The cast adaptor comes with hardware and a gasket, while the billet adaptors come with two stainless steel Allen socket screws, four carb studs, and four nuts (gaskets not included).

Make sure to check out our Base Insulators and Air Cleaners while your here.

Please read our tech article Selecting the Right Carb before buying a carburetor or an adaptor.

1.5" Small Log Adaptor (red anodized)	1.75" Large Log Adaptor (blue anodized)