Ford 400 CID (6.6L) Vacuum Diagram - Calibration 9-62M-R10, 10-5-78

This document is a factory emissions/vacuum hose routing schematic for a Ford 6.6L (400 CID) V8 engine, identified by calibration code 9-62M-R10 and dated 10-5-78. The diagram shows the vacuum hose connections between emission control components as viewed relative to the front of the engine. Components depicted include the air cleaner delay valve (A/CL DV), two vacuum retard delay valves (VRDV), air cleaner bi-metal sensor (A/CL BI MET), air bypass valve (AIR BPV), temperature vacuum switch (TVS), manifold vacuum source (MAN VAC), dual delay valve (DUAL DV), vacuum restrictor (V REST), two vacuum check/control valves (VCV), the carburetor with its S, B, E, and V vacuum ports, the EGR valve, load control valve (LCV), thermal vacuum valve (TVV), distributor (DIST), vacuum delay valve (VDV), purge control valve (PURGE CV), secondary canister (SEC CAN), fuel tank line (FUEL T), and carburetor spacer (CARB SPCR). A reader can use this diagram to correctly route or verify vacuum lines for the emissions and distributor advance systems on an engine bearing this specific calibration number.