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Spark plug torque specs 2005 Deville 4.6 L Northstar

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  • Cadillac Master
  • 20,706 Answers

20ft lbs max. is the general spec.
you can look it up, at alldata dot com at any time.

Posted on Oct 12, 2013

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Posted on Jan 02, 2017

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ZJLimited
  • 17970 Answers

SOURCE: torque specs for cylinder heads 4.9 v8 engine (NOT

5850a5e.jpg

Fig. Cylinder head torque sequence-4.5L and 4.9L engines (not Nothstar, this is 4.6L)

  1. Tighten cylinder head bolts, in sequence, to 38 ft. lbs. (50 Nm).
  2. Tighten cylinder head bolts, in sequence, to 68 ft. lbs. (90 Nm).
  3. Tighten No. 1, 3 and 4 cylinder head bolts to 90 ft. lbs. (120 Nm).

Hope this helps (remember rated).

Posted on Aug 12, 2010

duane_wong
  • 6826 Answers

SOURCE: whats the proper order and torque specs for a 99

REMOVAL & INSTALLATION NOTE: The manufacturer recommends that the entire powertrain be removed from the vehicle before removing the cylinder heads.

  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2. Drain the cooling system.
  3. Properly relieve the fuel system pressure.
  4. Remove or disconnect the following:
    • Negative battery cable
    • Powertrain assembly
    • Intake manifold
    • Cam covers
    • Harmonic balancer
    • Timing chain front cover
    • Oil pump
    WARNING
    Align all timing marks before performing the next step.
    • Chain tensioner from the timing chain
    • Cam sprockets
    NOTE: The timing chain remains in the chain case.
    • Timing chain guides, access for the retaining screws is through the plugs at the front of the cylinder head
    • Water crossover
    • Exhaust manifold
    • Cylinder head bolts by reversing the torque sequence
    • Cylinder head and discard the gasket
    WARNING
    With the camshafts remaining in the cylinder head some valves will be open at all times. Do not rest the cylinder head on a flat service with the cylinder face down, or valve damage will result. NOTE: Clean all gasket mating surfaces. Clean the head bolt holes in the crankcase. WARNING
    Be careful when cleaning aluminum gasket surfaces to prevent damage to the sealing surfaces.
  5. Check the cylinder head for warpage; it must be less than 0.002 in. (0.05mm). If the cylinder head was resurfaced, the dimension between the combustion chamber gauge pad and the deck surface must be at least 10.5mm. To install: NOTE: Refer to Section 1 of this manual for the cylinder head torque sequence illustration. The illustration is located after the Torque Specification Chart.
  6. Install or connect the following:
    • New cylinder head gasket
    • Cylinder head, lubricate the bolts with engine oil
  7. Torque the M11 bolts, in sequence, as follows:
    1. Step 1: 22 ft. lbs. (30 Nm).
    2. Step 2: Turn an additional 60 degrees.
    3. Step 3: Turn an additional 60 degrees (total 180 degrees).
  8. Torque the M6 bolts to 106 inch lbs. (12 Nm).
  9. Set the camshaft timing
  10. Camshaft guide bolt access hole plugs in the cylinder heads. The plugs should be seated and snug
  11. Install or connect the following:
    • Intake cam covers
    • Oil pump
    • Timing chain front cover
    • Harmonic balancer
    • Cam sprockets
    • Chain tensioner to the timing chain
    • Timing chain guides
    • Intake manifold
    • Water crossover
    • Exhaust manifold. Torque the nuts to 22 ft. lbs. (30 Nm) or the bolts to 18 ft. lbs. (25 Nm).
    • Powertrain assembly
    • Negative battery cable Fig. 1: Minimum head resurface dimension 7922vg04.gif

  12. Fill the cooling system.
  13. Evacuate and charge the air conditioning system.
  14. Run the engine and check for leaks.
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Posted on Aug 19, 2010

bluebirdmate
  • 1190 Answers

SOURCE: the torque specs for a 1999 4.6 liter northstar

Hello: The following is straight from the 1999 4.6 service manual----Install the bearing caps according to the identification marks. The arrow should point toward the front of the engine. the number indicates the position from the front of the engine and the I or E indicates intake or exhaust camshaft. hand start all bolts. Tighten to 44 lb. in. plus 30 degrees Start from front and work back. A torque angle meter is used to measure degrees.

Posted on Sep 18, 2010

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