What engine does this vacuum diagram cover?

The captions identify it as the 351" M V8 (351M), with Fig. 25 for calibration 7-72J-R11 and Fig. 27 for calibration 9-71J-R10.

What emissions components are shown in the routing diagram?

The diagram shows A/CL DV, VRDV, A/CL BI MET, VVA, LCV, AIR BPV, VRESER, VCV (multiple), VDV (two), the carburetor (S CARB with E and V ports), EGR, SA-FV, INT MAN, TK, SOL V, and DIST, plus a CAL-TO PURGE line.

How is the diagram oriented?

The left side of the diagram is labeled 'FRONT OF ENGINE,' so the schematic is drawn as viewed with the engine front at the left.

Where does the EGR valve connect on this diagram?

The EGR connection is shown at the carburetor's E port area, with a line running through the SA-FV valve.

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Ford 351M V8 Vacuum Routing Diagram - Calibration 9-71J-R10 & 7-72J-R11

351 M V8 vacuum routing schematic showing VRDV, EGR, VCV and carburetor connections

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Reference · 1977-1979 RancheroAll 2 vacuum routing diagrams

Ford 351M V8 Vacuum Routing Diagram - Calibration 9-71J-R10 & 7-72J-R11

1978-79 Ford Ranchero/T-Bird/Cougar/LTD II A/C-Heat Vacuum Line Routing Diagram

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Vacuum routing schematic for a 351 M V8 (calibration 7-72J-R11) showing emission and carburetor vacuum hose connections.

Part of 1977-1979 Ford Ranchero Vacuum Routing Diagrams

AI caption June 2009 · Photo 9 of 9

This document is a scanned page from an emissions/vacuum routing reference showing a vacuum hose schematic for a Ford 351M (351") V8 engine. The page contains two figure captions: Fig. 25 identifies calibration 7-72J-R11, and Fig. 27 (the diagram highlighted in pink on this page) identifies calibration 9-71J-R10, both for the 351" M V8. The schematic, oriented with 'FRONT OF ENGINE' along the left side, traces vacuum lines between emissions components including the air cleaner delay valve (A/CL DV), air cleaner bi-metal sensor (A/CL BI MET), vacuum retard/delay valves (VRDV, VDV), vacuum check valves (VCV), vacuum vent/auxiliary valve (VVA), load control valve (LCV), air bypass valve (AIR BPV), vacuum reservoir (VRESER), spark advance fuel valve (SA-FV), EGR valve, thermal kicker (TK), solenoid valve (SOL V), distributor (DIST), carburetor (S CARB with E and V ports), intake manifold (INT MAN), and a line marked CAL-TO PURGE. A reader can use this diagram to identify the correct factory vacuum hose routing and component connections for a 351M V8 with the 9-71J-R10 (or 7-72J-R11) emissions calibration.

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Frequently asked questions

What engine does this vacuum diagram cover?: The captions identify it as the 351" M V8 (351M), with Fig. 25 for calibration 7-72J-R11 and Fig. 27 for calibration 9-71J-R10.
What emissions components are shown in the routing diagram?: The diagram shows A/CL DV, VRDV, A/CL BI MET, VVA, LCV, AIR BPV, VRESER, VCV (multiple), VDV (two), the carburetor (S CARB with E and V ports), EGR, SA-FV, INT MAN, TK, SOL V, and DIST, plus a CAL-TO PURGE line.
How is the diagram oriented?: The left side of the diagram is labeled 'FRONT OF ENGINE,' so the schematic is drawn as viewed with the engine front at the left.
Where does the EGR valve connect on this diagram?: The EGR connection is shown at the carburetor's E port area, with a line running through the SA-FV valve.