I find this vacuum diagrams for 1986 Chevrolet Truck G30 1 ton Van 5.7L 4BL 8cyl (click over pic for zoom)...
Fig. 136: 1986 5.7L engine-Federal with automatic transmission (G10, 20 and 30 models)
Fig. 137: 1986 5.0L and 5.7L engines-California with automatic transmission (G10, 20 and 30 models)
Fig. 138: 1986 5.7L engine-Federal with manual transmission (G30 heavy duty models)
Fig. 139: 1986 5.7L engine-Federal with automatic transmission (G30 heavy duty modDiagram of connection of a G30 1986 van carburetor - zjlimited_519.jpg>
Fig. 140: 1986 5.7L engine-CaDiagram of connection of a G30 1986 van carburetor - zjlimited_520.jpgual transmission (G30 heavy duty models)
Fig. 141: 1986 5.7L engine-California with automatic transmission G30 (heavy duty models)
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Diagram of where hoses go on Kai bao carburetor on sky hawk motor
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