2001 Impala LS 3.8 Valve Cover Torque Specs - Chevy Impala Forums

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Old 12-01-2012, 08:49 PM   #1 (permalink)
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2001 Impala LS 3.8 Valve Cover Torque Specs

Hey guys. Would anyone happen to know what the torque specs and pattern is for the valve covers on a 2001 3.8? I bought the Fel-Pro valve cover gaskets also do those need sealer or do they go on dry? If they need sealer, would the oil resistant permatex black rtv be appropriate?

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Old 12-02-2012, 06:47 PM   #2 (permalink)
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Anyone????

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Old 12-03-2012, 11:27 AM   #3 (permalink)
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They go on dry, no particular pattern. Not sure what the spec is, buts its pretty light. How well is your wrist calibrated? Lightly seating the bolts is usually good, you want to slightly compress the gasket, overtightening will just break or strip the bolts.

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Old 12-03-2012, 05:40 PM   #4 (permalink)
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Sorry for the late reply, been busy at work lately.

The valve cover nuts/bolts torque spec is 88 inch pounds.

No real specific pattern, but i would just go at diagonals for example... top left, bottom right, then bottom left, top right and the middle last.

You can use thread locking compound on the mounting bolt threads if you want.

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Old 12-03-2012, 08:06 PM   #5 (permalink)
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Kingnutin and Stephen thanks guys you are awesome!! Thanks a bunch! Gonna rip into the whole top end tomorrow. Intake, water pump, everything!

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Old 12-03-2012, 08:54 PM   #6 (permalink)
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I think I got this from the Autozone website:
3.8L Engine

Left Side
  1. Disconnect the negative battery cable.
  2. Remove the engine lift bracket from the exhaust manifold studs.
  3. Remove the acoustic/cosmetic engine cover.
  4. Remove the right side "wish bone" shaped engine strut by removing the through bolts.
  5. Tag for identification and remove the left (front) spark plug wires.
  6. Remove the spark plug wire cover retainer clip from the rocker arm cover.
  7. Remove the rocker arm cover bolts and remove the cover from the engine. Do not pry it off. Bump the cover sideways with a rubber mallet if it is stuck. Discard the gasket.


To install:
  1. Clean all parts well including the sealing surfaces on both the cylinder head and the cover gasket flange. Clean any thread-locking compound from the rocker arm cover bolts.
  2. Install a new gasket making sure the gasket is properly seated in the cover groove. Install the cover. Apply thread-locking compound GM #12345493 or equivalent to the bolt threads and install the cover bolts. Torque to 89 inch lbs. (10 Nm).
  3. Install the remaining components in the reverse order of the removal process.
Right Side (Rear)
  1. Disconnect the negative battery cable
  2. Remove the acoustic/cosmetic engine cover.
  3. Remove the rear alternator brace.
  4. Tag for identification and remove the right (rear) spark plug wires.
  5. Remove the engine cover retaining bracket from the exhaust manifold studs.
  6. Remove the right (rear) engine lift bracket from the exhaust manifold studs.
  7. Remove the rocker arm cover bolts and remove the cover from the engine. Do not pry it off. Bump the cover sideways with a rubber mallet if it is stuck. Discard the gasket.

To install:
  1. Clean all parts well including the sealing surfaces on both the cylinder head and the cover gasket flange. Clean any thread-locking compound from the rocker arm cover bolts.
  2. Install a new gasket making sure the gasket is properly seated in the cover groove. Install the cover. Apply thread-locking compound GM #12345493 or equivalent to the bolt threads and install the cover bolts. Torque to 89 inch lbs. (10 Nm).
  3. Install the remaining components in the reverse order of the removal process.

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Old 12-03-2012, 10:04 PM   #7 (permalink)
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yea, i was going off past experience and manuals i have used in the past. The 1 I have says 88 in pds which is the haynes manual, the other is online which says 89 inch pounds, not that big of a difference IMO, lol.

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Old 12-03-2012, 10:14 PM   #8 (permalink)
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I like to rely on past experience and either my gm service manuals or the haynes manual
I have rebuilt many engines so its not that hard to do a valve cover gasket even if its your first time.

this is a cool link to check out as well
http://www.impalaforums.com/resource...r-manuals.html

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Old 12-08-2012, 09:26 PM   #9 (permalink)
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Quote:
Originally Posted by Stephen View Post
.... The 1 I have says 88 in pds which is the haynes manual, the other is online which says 89 inch pounds, not that big of a difference IMO, lol.
A general OEM tolerance for suspension parts is +/- 15%.
I don't know what they use on drivetrain, but it can't be tighter than +/- 5% or about +/-4.5Nm. Definitely, no big deal.

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