The Edelbrock #38783 Victor EFI 4-Barrel Throttle Body complements our Victor EFI line of manifolds. This throttle body mounts on a standard 4150-style square-bore carburetor bolt spacing. It is sand cast; fully machined; and assembled by Edelbrock. The #38783 has 1.75in. Throttle Bores and accepts a Standard (5-1/8in. Flange) Air Cleaner assembly. A 2-Pin Hitachi PWM Style IAC Motor and 3-Pin TPS are included. Satin Finish