This 1V carb adaptor is used to install the Autolite 1100-1V (1.5" carb bore) on any late model large log cylinder head (1.75" bore). Like the stock spacer plate, it has a screw boss on the side for mounting the carb linkage. It also has a threaded hole for those who need a source for manifold vacuum, or you can cap it off with a pipe plug if you prefer. Unlike other adaptors, this adaptor is only a 1/2" thick, whcih increases hood clearance and allows the use of a thicker air filter element for increased air flow and horse power. Made from billet aluminum, it comes with our 1/8" phenolic spacer and two gaskets (the stock manifold gasket, vacuum fittings, and/or plugs are not included). Carb studs are optional.

NOTE: Make sure to check out our Base Insulators, 2V Adaptors and Air Cleaners while your here.

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

NOTE: This photo was taken during the prototype stage before the groove for the idle circuit was machined. All production pieces have the groove, as shown in the photo above.