Read about refurbishing a Holley carburetor through two parts, upgrading the float bowl and installing an electric choke conversion kit, in Learn Hot To: The Garage column of the May 2009 issue of ...

Holley came out with the first modular carburetor, the 4150, back in '57. Today, Holley still makes the 4150-heck it even makes hopped-up versions for everything from drag racing to rock crawling ...