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For those of you wishing to switch from a carburetor intake to electronic fuel injection (EFI), Accufab has developed two high flow throttle bodies to meet your needs.  The Accufab 4150 and 4500 are made from the finest billet aluminum, polished to a mirror finish or available anodized black blue or red.  The Accufab 4150 flows 1215 CFM and has four 1-3/4" brass throttle plates.  The Accufab 4500 flows 2128 CFM and has four 2-1/4" brass throttle plates.  Both styles have high quality progressive linkage and use late model GM electronics, included.

Part #IAC4B is available polished, red, blue or black anodized and includes o-rings and mounting hardware.