Quick fuel carburetors are amongst the highest quality carburetors on the market. They are hand assembled and engine tested here in the USA. Carburetor has been tumble polished for a beautiful long lasting shine. The SL-600-VS is a vacuum secondary carburetor with electric choke. Other standard features include changeable idle air & high speed bleeds, changeable primary idle feed restrictions, changeable power valve channel restrictions, notched secondary float for jet extensions and built-in sight glasses for easy float adjustment. The SL-600-VS has 1.312" venturies and 1-9/16" throttle bore. Carburetor includes kickdown linkage for Ford applications. We are a stocking Quick Fuel distributor and offer many different sizes, finishes and options so give us a call if you don't see what you are looking for.