Torque value and pattern

Torque Chart - E3 Spark Plugs

e3sparkplugs.com/torque-chart/

The table below lists the torquing specifications for most spark plugs being installed in either cast iron or aluminum cylinder heads. Torque values assume clean, dry threads.

Tech Specs - Spark Plug Cross Reference, Torque ... - Autolite

It is recommended as most intake manifolds are either cast iron or cast aluminum. Uneven torque can result in warping. Too little torque can cause intake leaks. Too much torque can cause cracking or breakage of the cast metal.

Block and Basics
Displacement: 350 cubic inches, 5733 cubic centimeters, 5.7 liters
Block Material: Cast Iron
Main Bearings: 2-Bolt Centers and Ends (The Corvette LT1/LT4 had 4-bolt mains)
Stroke: 3.48"
Bore: 4.00"
Compression Ratio: 10.4:1
Combustion Chambers: 54 cubic centimeters
Factory Redline Rating: 5700 Rotations Per Minute

Bottom End
Piston Material: (10159437) Eutectic Aluminum/Silicon Alloy
Connecting Rod Material: (10108688) Powdered Metal
Crankshaft Material: (12556307) Cast Iron

Top End and Valvetrain
Cylinder Heads: (10168448) Cast Aluminum, 2 valves per cylinder/16 valves total, ~212 CFM flow (Impala SS and Caprice heads were made of cast iron*)
Valve Diameter: (intake- 10241743, exhaust- 12550909) 1.94 intake, 1.50 exhaust
Valve Overlap: 41*
Valvesprings: (10206040) 85 lbs, seated
Camshaft Specs (12551705): 205/207 duration @ 50*, .447/.459" lift, 117 Lobe Seperation Angle
Rocker Arms: (10089648) 1.5:1 Stamped Steel
Timing Chain: (10128485) Powdered metal link

Intake and Fuel Delivery
Fuel Delivery: Electronic Fuel Injection, sequential port
Injector Size: (17124248) 3.0gps, 22lbs/hr speed density (1992-1993), 24lbs/hr mass airflow (1994-1997)
Throttle Body: 48 millimeter twin butterfly
Intake Manifold: (12552137) Aluminum

Factory Power Ratings
92-96 LT1 Corvette: 300bhp, 330lb-ft
1996 LT4 Corvette: 330bhp, 340lb-ft
1992 LT5 Corvette: 375bhp, 370lb-ft
93-95 LT5 Corvette: 405bhp, 385lb-ft
93-95 LT1 F-Body: 275bhp, 325lb-ft
96-97 LT1 F-Body: 285bhp, 325lb-ft
96-97 WS6/SS: 305bhp, 335lb-ft
93-97 Firehawks: 315bhp, 340lb-ft

Factory LTX Camshaft Specifications**:
1992 Y-body: 205/207 0.451/0.450 lift 117 LSA
1993-1995 Y-body, F-body: 202/207 0.450/0.460 lift 116 LSA
1994-1996 B-bodies (including L99 4.3L): 191/196 0.418/0.430 lift 111 LSA
1996 Y-body, 1996-1997 F-body: 200/207 0.447/0.459 lift 117 LSA
1996 Y-body, F-body LT4: 203/210 0.476/0.479 lift 115 LSA


hope this helps

Here is Holden\'s Alloytec V6 in glorious technical detail.



The global V6 engine is the first V6 engine program to address what Thomas G. Stephens, group vice president, GM Powertrain, says is a vital initiative: to develop world-class engines with fully contemporary features - such as dual overhead cams and variable valve timing - but at a competitive cost structure that allows use of the engines in a global mix of vehicles.



Exhaust: 111 degrees BTDC initial timing

50 crankshaft degrees retard authority



Compression Ratio:10.2:1



Bore Centers:103 mm



Firing Order:1-2-3-4-5-6



Fuel Shutoff:6,700 rpm



Engine Idle Speed:600 rpm



Fuel System:Sequential port fuel injection (returnless)



Engine Management:Torque-based; Bosch Motronic ME 9 32-bit micro-hybrid controller



Intake Manifold:Dual-plenum, equal-length with 2-position variable volume control (resonance tuned)



Throttle:68-mm single bore; electronic control (ETC)



Ignition:Individual coil-on-plug; individual cylinder knock control



Fuel Requirement:Premium fuel recommended



Emissions Controls:Dual close-coupled catalytic converters (1.15L ultra-thinwall ceramic)

Positive crankcase ventilation (PCV)

Intake- and exhaust-cam phasers (EGR)

Evaporative emissions system



Assembly Sites:St. Catharines, Ontario, Canada

Port Melbourne, Victoria, Australia

Material Applications



Block Material:Aluminium, precision sand-cast 319 with cast-in-place iron liners



Cylinder Head Material:Aluminium, semi-permanent mould 319



Intake Manifold:Upper: Aluminium, sand-cast 319

Lower: Aluminium, 356-T6



Exhaust Manifold:High-silicon moly cast iron



Camshaft Covers:Injection compression thermoset composite; vibration isolated



Front Cover:Diecast 380 aluminium; internal multilayer damping panels



Crankshaft:Forged steel



Connecting Rods:Sinterforged steel



Pistons:Aluminium, polymer-coated skirts, full-floating wristpins



Main Bearing Caps:6 bolt caps, copper-infiltrated sintered steel



Oil Pan:Structural diecast aluminium, steel windage and baffle plates



Additional features:Pressure-actuated piston-cooling oil jets

Extended-life sparkplugs, coolant, accessory belts

Cartridge-style, top-access oil filter

Oil-level sensor

Wide-range oxygen sensors

Nothing really to clean

Just an aluminum casting with a throttle plate

Spray with CRC Throttle Body Cleaner

All fuel injected vehicles are a dry system intake

Only the egr areas get nasty

I think you got ignition issues,vacuum leaks,old O2 Sensors,
other things to work on.

That would be the motor on the throttle body,is that
what you see looking at it

You don't have anything to clean

You can spray CRC Throttle Body Cleaner into
the casting & around the plate, but that isn't going
to be a fix for anything.

Todays vehicles are a dry intake system, not like the
old carb set up,all fuel is injected at the intake valve

There is no real cleaning, except egr deposits & that requires
some disassembly to do a good job

1990-1991 OBD0*
Engine: B18A
Cylinder Arrangement: Inline 4 Cylinders, Transverse
Type: Water cooled, 1.8L, 4 cylinder, 16 valve, DOHC
Displacement: 111.9 cu in (1834 cc)
Bore & Stroke: 3.19 in x 3.50 in (81mm x 89mm)
Compression Ratio: 9.2 : 1
Valve Train: Double Overhead Camshafts, Belt Driven
Fuel System: Programmed Fuel Injection (PGM-FI)
Horsepower: 130 hp @ 6000 rpm
Torque: 121 lbs.-ft. (16.8 kg-m) @ 5000 rpm
Redline: 6500 RPMs
Engline Block: Aluminum Alloy with Cast Iron Cylinder Liners
Cylinder Head: Aluminum Alloy

Bonneville, LeSabre, Park Avenue 2000-2005 Intake Manifold - Removal & Installation

3.8L Engine
VIN 1 Engine

1. Before servicing the vehicle, refer to the Precautions section.
2. Relieve the fuel system pressure.
3. Drain the cooling system.
4. Remove or disconnect the following:
   Negative battery cable Supercharger Thermostat housing Exhaust Gas Recirculation (EGR) tube at the intake manifold Engine Control Temperature (ECT) sensor Intake manifold

To install:

1. Install or connect the following:
   Intake manifold with new gaskets. Torque the bolts, working from the center out, to 11 ft. lbs. (15 Nm). ECT sensor connector EGR tube to the intake manifold Thermostat housing Supercharger Negative battery cable
2. Refill and bleed the cooling system.
3. Run the engine and check for leaks and proper engine operation.

VIN K Engine

1. Before servicing the vehicle, refer to the Precautions section.
2. Disconnect the negative battery cable.
3. Drain the cooling system.
4. Relieve the fuel system pressure.
5. Remove or disconnect the following:
   Fuel injector sight shield Air inlet duct Spark plug wires from the right side Manifold Absolute Pressure (MAP) sensor Vacuum lines from the intake manifold Fuel lines Fuel injector electrical connectors Fuel regulator vacuum line Fuel rail from the intake manifold Exhaust Gas Recirculation (EGR) heat shield Throttle cable bracket from the cylinder head mounting bracket and the throttle body cables Throttle body support bracket Upper intake plenum and gasket Thermostat housing Electrical connector from the Engine Coolant Temperature (ECT) sensor Drive belt tensioner assembly EGR valve outlet pipe Lower intake manifold
   
   
   Fig. Exploded view of the intake manifold and related components-3.8L (VIN K) engine
   

To install:



Fig. Upper intake manifold torque sequence-3.8L (VIN K) engine



Fig. Lower intake manifold torque sequence-3.8L (VIN K) engine

1. Install or connect the following:
   Intake manifold using new manifold gaskets. Torque the bolts in sequence to 11 ft. lbs. (15 Nm); then, re-torque to 11 ft. lbs. (15 Nm). EGR valve outlet pipe Drive belt tensioner assembly. Torque the tensioner bolts to 37 ft. lbs. (50 Nm). Electrical connector to the ECT sensor Thermostat housing Upper intake plenum. Torque the intake plenum bolts to 88 inch. lbs. (10 Nm). Throttle body support bracket Throttle cable bracket to the cylinder head mounting bracket and the cables to the throttle body lever EGR heat shield Fuel rail. Torque the fuel rail bolts to 88 inch. lbs. (10 Nm). Fuel lines Fuel regulator vacuum line Fuel injector electrical connectors Vacuum lines to the intake manifold MAP sensor Spark plug wires Fuel injector sight shield and air inlet duct Negative battery cable
2. Refill and bleed the cooling system.
3. Run the engine and check for leaks and proper engine operation.

Hope this help (remember rated this).

Intake Manifold 5/16 Bolts Non-Hardening sealers 25 ft-lbs
Cast Iron Heads 3/8 Bolts 30 ft-lbs

The torque sequence is snug all down then just star left rear then right front then right rear then left front and so on

Intake Manifold REMOVAL & INSTALLATION 1.9L SOHC Engine

1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
2. Properly relieve the fuel system pressure.
3. Drain the coolant system.
4. Remove or disconnect the following:
   • Negative battery cable
   • Air cleaner fresh air hose
   • Positive Crankcase Ventilation (PCV) valve hose
   • Fuel line from the rail
   • Throttle cable from the throttle body
   • Throttle cable bracket nuts
   • Fuel injector electrical connectors
   • Throttle Position (TP) sensor electrical connectors
   • Idle Air Control (IAC) valve electrical connectors
   • Manifold Absolute Pressure (MAP) sensor electrical connectors
   • Exhaust Gas Recirculation (EGR) valve electrical connectors
   • Heater hose from the intake manifold outlet
5. Position the wiring harness over the brake master cylinder
6. Remove or disconnect the following:
   • Intake manifold support bracket bolt
   • Label the vacuum line for proper assembly
   • Drive belt
   • Power steering pump
   • Upper intake manifold bolts
   • Evaporative Emissions (EVAP) canister purge valve solenoid vacuum hose
   • Brake booster vacuum hose
   • Lower intake manifold bolts
   • Intake manifold
   To install:
   
7. Thoroughly clean all gasket mating surfaces. Be careful not to damage or score the aluminum surface. If replaced, use Loctite® 290, to seal the new PCV valve inlet tube into the manifold. NOTE: Refer to Section 1 of this manual for the intake manifold torque sequence illustration. The illustration is located after the Torque Specification Chart.
   
8. Install or connect the following:
   • New gasket and manifold. Torque the nuts in sequence to 22 ft. lbs. (30 Nm).
   • Power steering pump. Torque the fasteners to 27 ft. lbs. (38 Nm).
   • Drive belt.
   • Heater hose and install the manifold support bracket bolt. Tighten the bolt to 22 ft. lbs. (30 Nm).
   • Lubricate the male ends of the fuel lines with a few drops of clean engine oil, then connect the fuel supply and return lines.
   • Fuel line(s) in the retaining bracket. Torque the mounting screw to 36 inch lbs. (4 Nm).
   • Throttle cable to the throttle body and attach the accelerator cable bracket. Torque the bolts to 22 ft. lbs. (30 Nm).
   • Reposition the wiring harness and connect the wiring and vacuum hoses to their original locations. The harness leads to the TP sensor and EGR solenoid must be routed between the intake manifold runners.
   • Negative battery cable
9. Fill the coolant system.
10. Prime the fuel system by cycling the ignition ON for 5 seconds and OFF for 10 seconds a few times without cranking the engine.
11. Start the engine, check for leaks, and repair if necessary.