K 1500 Truck 4WD V8-350 5.7L (1986)
Exhaust Manifold: Service and Repair
1986---87 V8-305 & V8-350
Disconnect battery ground cable.
On G models, remove engine cover.
On all models, raise and support vehicle.
Disconnect exhaust pipe from manifold, then lower vehicle.
Disconnect oxygen sensor wire from left side manifold, if applicable.
Disconnect AIR hose from check valve.
On 1987 models, remove heat stove pipe from right side manifold.
On 1987 R and V models, proceed as follows:
a. Remove A/C compressor rear bracket from left side manifold.
b. Remove diverter valve and bracket from right side manifold.
On 1987 G models with fuel injected engine, proceed as follows:
a. Remove power steering pump rear bracket from left side manifold.
b. Remove dipstick tube bracket from right side manifold.
On all 1986 engines and carbureted 1987 engines, remove AIR pipe bracket from left side manifold stud.
On all models, remove exhaust manifold attaching bolts, washers, tab washers and spark plug heat shields, as equipped, then the exhaust manifold.
Reverse procedure to install, using a new gasket.