does anyone have all the torque specs for the UIM, LIM, rockers, TB, and anything else that goes along with this.

cake there very easy just more time consuming

2000 Buick Century

Intake Manifold Replacement Upper
Removal Procedure

Important

This engine uses a sequential multiport fuel injection system. Connect the injector wiring harness connectors to their appropriate fuel injector or exhaust emissions and engine performance may be seriously affected.

1. Disconnect the battery ground (negative) cable. Refer to Refer to Battery Negative Cable Disconnect/Connect Procedure in Engine Electrical.
2. Disconnect the vacuum hose connection from the throttle body air inlet duct.
3. Disconnect the wiring harness connection from the intake air temperature (IAT) sensor in the throttle body air inlet duct.
4. Remove the throttle body air inlet duct.
5. Drain the engine coolant from the cooling system.
6. Remove the accelerator control and cruise control cables with bracket from the throttle body.
7. Disconnect the wiring harness connectors from the throttle body.
* Throttle position (TP) sensor
* Idle air control (IAC) valve
8. Disconnect the (left) front spark plug wires.
9. Disconnect the wiring harness attachment clips.
* Camshaft position (CMP) sensor wiring harness
* Left spark plug wire harness
* Engine wiring harness
10. Disconnect the thermostat bypass pipe coolant hoses from the throttle body.
11. Remove the ignition coil bracket with the coils, the purge solenoid and the vacuum canister solenoid.

# Disconnect the vacuum hose at the manifold air pressure (MAP) sensor and upper intake manifold.
# Remove the manifold air pressure (MAP) sensor and the bracket.

# Disconnect the emission control vacuum harness.
# Disconnect the vacuum hose connections from the upper intake manifold.

* Vacuum booster hose
* Automatic transaxle vacuum modulator hose
* Heater and air conditioning vacuum source hose
* Fuel pressure regulator

# Remove the generator brace.
# Remove the generator bracket.
# Remove the exhaust gas recirculation (EGR) valve.
Remove the right upper intake manifold bolts and studs.
# Remove the left upper intake manifold bolts.
# Remove the upper intake manifold.
# Remove the upper intake manifold gasket.
# Remove the throttle body.
# Clean the seal surfaces on the manifold with degreaser.


Intake Manifold Replacement Lower
Removal Procedure

Important

This engine uses a sequential multiport fuel injection system. Injector wiring harness connectors must be connected to their appropriate fuel injector or exhaust emissions and engine performance may be seriously affected. For the correct injector wiring harness connector-to-fuel injector connection procedure, refer to Engine Electrical.

1. Disconnect the battery ground (negative) cable. Refer to Battery Negative Cable Disconnect/Connect Procedure in Engine Electrical.
2. Remove the upper intake manifold. Refer to Intake Manifold Replacement .
3. Remove the left valve rocker arm cover. Refer to Valve Rocker Arm Cover Replacement .
4. Remove the right valve rocker arm cover. Refer to Valve Rocker Arm Cover Replacement .
Disconnect the engine coolant temperature (ECT) wiring harness
# Disconnect and remove the fuel injector and manifold air pressure (MAP) wiring harness.
# Remove the fuel pipe clip bolt.
# Remove the fuel pipe clip.
Disconnect the fuel feed pipe from the fuel injector rail.
Disconnect the fuel return pipe from the fuel injector rail.
Remove the fuel injector rail.
Remove the power steering pump from the front engine cover and reposition
# Disconnect the heater inlet pipe with heater hose from the lower intake manifold and reposition.
# Disconnect the radiator inlet hose from the engine.
# Disconnect the thermostat bypass hose from the thermostat bypass pipe and lower intake manifold pipe.
# Remove the lower intake manifold bolts.
# Remove the lower intake manifold.
# Remove the valve rocker arms and pushrods.
# Remove the lower intake manifold gaskets and seals.
# Clean the lower intake manifold gasket and seal surfaces on the cylinder heads and the engine block.
# Clean the gasket and seal surfaces on the lower intake manifold with degreaser.
# Remove all the loose RTV sealer.
# Remove the engine coolant temperature (ECT) sensor.
# Remove the water outlet bolts.
# Remove the water outlet.
Remove the thermostat.


Installation Procedure

Install the thermostat.
Install the water outlet.
# Install the water outlet bolts.
Tighten

Tighten the water outlet bolts to 25 N·m (18 lb ft).

# Install the engine coolant temperature (ECT) sensor.
Tighten

Tighten the engine coolant temperature (ECT) sensor to 23 N·m (17 lb ft).

Important

All gasket-mating surfaces need to be free of oil, and foreign material. Use GM P/N 12346139 (Canadian P/N 10953463) or equivalent to clean surfaces.
# Install the lower intake manifold gaskets.
# With gaskets in place apply a small drop 8-10 mm (0.31-0.39 in) of RTV sealer GM P/N 12346141 (Canadian P/N 10953433) or equivalent to the 4 corners of intake manifold to block joint (1).
# Connect the 2 small drops with a bead of RTV sealer that is between 8-10 mm (0.31-0.39 in) wide and 3.0-5.0 mm (0.12-0.20 in) thick (2).
# Install the valve rocker arms and pushrods .

(# Install the rocker arm bolt(*).
Tighten

Tighten the rocker arm bolt to 14 N·m (124 lb in) plus 30 degrees.)

Install the lower intake manifold.

LIM3100.gif

Important

All lower intake manifold bolts need to be cleaned, free of any foreign material, and reused only if new bolts are unavailable. Use GM P/N 12345382 (Canadian P/N 10953489) or equivalent and apply to the old intake manifold bolt threads.

Important

Manufacturer recommends the center bolts be fully torqued before the diagonal bolts to assure proper seal ability.

Important

Lower intake manifold bolts in location 6 and 7 should be torqued to specification using a crows foot type tool.
# Install the lower intake manifold bolts.
Tighten

1. Tighten the lower intake manifold bolts in sequence to 7 N·m (62 lb in) on the first pass.
2. Tighten the lower intake manifold bolts (1,2,3,4) in sequence to 13 N·m (115 lb in) on the final pass.
3. Tighten the lower intake manifold bolts (5,6,7, in sequence to 25 N·m (18 lb ft) on the final pass.
# Connect the thermostat bypass hose to the thermostat bypass pipe and lower intake manifold pipe.
# Connect the radiator inlet hose to the engine.
# Install the heater inlet pipe.
# Install the heater inlet pipe nut.
Tighten

Tighten the heater inlet pipe nut to 25 N·m (18 lb ft).
Important

Do not press on the fuel pressure regulator valve when installing the fuel injector rail assembly.
# Install the fuel rail assembly.

1. Install the fuel injector O-rings using GM P/N 12345616 (Canadian P/N 993182) or equivalent.
2. Install the injector nozzles into the lower intake manifold injector bores.
3. Press on the injector rail using the palms of both hands until the injectors are fully seated.

# Install the fuel injector bolts.
Tighten

Tighten the fuel injector rail bolts to 10 N·m (89 lb in).
Connect the fuel return pipe to the fuel injector rail.
Connect the fuel feed pipe to the fuel injector rail.
# Install the fuel feed and return pipe retaining clip.
# Install the fuel feed and return pipe retaining clip bolt.
Tighten

Tighten the fuel feed and return pipe retaining clip bolt to 8 N·m (71 lb in).
# Install and connect the fuel injector and manifold air pressure (MAP) wiring harness.
# Connect the engine coolant temperature (ECT) wiring harness.
# Install the right (rear) valve rocker arm cover.
# Install the generator.
# Install the left (front) valve rocker arm cover.
# Install the upper intake manifold

Install the throttle body. (Tighten the throttle body retaining nuts and bolts to 28 N·m (21 lb ft).)

# Install the upper intake manifold gasket.
# Install the upper intake manifold.
# Loosely install the left upper intake manifold bolts.
# Loosely install the right upper intake manifold bolts and studs.

Notice

Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
# Install the upper intake manifold bolts and studs.
Tighten

Tighten the upper intake manifold bolts and studs to 25 N·m (18 lb ft).
# Install the exhaust gas recirculation (EGR) valve.
# Install the generator bracket.
# Install the generator brace.
# Connect the vacuum hose connections to the upper intake manifold.

* Vacuum booster hose
* Automatic transaxle vacuum modulator hose
* Heater and air conditioning vacuum source hose
* Fuel pressure regulator
# Connect the emission control vacuum harness.
# Install the manifold air pressure (MAP) sensor and bracket.
# Connect the vacuum hose at the manifold air pressure (MAP) sensor and the upper intake manifold.
# Install the ignition coil bracket with the coils, the purge solenoid and the vacuum canister solenoid.

# Connect the thermostat bypass pipe coolant hoses to the throttle body.
# Connect the wiring harness attachment clips.

* Camshaft position (CMP) sensor wiring harness
* Left spark plug wire harness
* Engine wiring harness

# Connect the left spark plug wires.
# Connect the wiring harness connectors to the throttle body.

* Throttle position (TP) sensor
* Idle air control (IAC) valve

# Install the accelerator control and cruise control cables with bracket to the throttle body.
Fill the cooling system with engine coolant.
# Install the throttle body air inlet duct.
# Connect the wiring harness connection to the intake air temperature (IAT) sensor in the throttle body air inlet duct.
# Connect the vacuum hose connection to the throttle body air inlet duct.
# Connect the battery ground (negative) cable.

wow, thanks dick, that will come in handy!