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installing a intake manifold gasket on vortec smallblock


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post-108256-0-44367300-1362530574_thumb.jpgi have to put a new head to intake manifold gasket in my 98 305 gmc. does anyone have a short breakdown list to veiw and does both brackets on front have to come off. or is there already a topic started sometime back, i tried searching but didn't get any results. :sigh:

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i will give you the installation as its rather important , there are many side links in removal,,

 

all data is painless for $27 a yr online if ya need more ,and yes to bracket and p/s pump

 

Intake Manifold Installation



38512.gif
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Notice: Apply the proper amount of the sealant when assembling this
component. Excessive use of the sealant can prohibit the component from sealing
properly. A component that is not sealed properly can leak leading to extensive
engine damage.





Important: The lower intake
manifold must be installed and the fasteners tightened while the adhesive is
still wet to the touch.





1.
Apply a 4.0 mm (0.157 in) patch of adhesive
GM P/N United States 12346141, GM P/N Canada 10953433, or equivalent, to the
cylinder head side of the lower intake manifold gasket at each
end.





2.
Install the lower intake manifold gasket onto
the cylinder head.






Use the gasket locator pins in order to properly seat the lower intake
manifold gasket onto the cylinder
head.

26744.gif
tif.gif
Notice: Apply the proper amount of the sealant when assembling this
component. Excessive use of the sealant can prohibit the component from sealing
properly. A component that is not sealed properly can leak leading to extensive
engine damage.





Important: All sealing
surfaces must be clean, free of oil, dirt, or any other foreign material.





3.
Apply a 5 mm (0.197 in) bead of adhesive
GM P/N United States 12346141, GM P/N Canada 10953433, or equivalent, to the
front top of the engine block.





4.
Extend the adhesive bead 13 mm (0.50 in) onto
the each lower intake manifold
gasket.

26743.gif
tif.gif





5.
Apply a 5 mm (0.197 in) bead of adhesive
GM P/N United States 12346141, GM P/N Canada 10953433, or equivalent, to the
rear top of the engine block.





6.
Extend the adhesive bead 13 mm (0.50 in) onto
each lower intake manifold
gasket.

66456.gif
tif.gif





7.
Install the lower intake manifold onto the
engine block and the cylinder heads.

Notice: Refer to
Fastener Notice
in Cautions and Notices.






8.
Apply threadlock GM P/N United States 12345382,
GM P/N Canada 10953489, or equivalent, to the threads of the lower intake
manifold bolts.

500689.gif
tif.gif
Notice: Proper lower intake manifold fastener tightening sequence and torque
is critical. Always follow the tightening sequence, and torque the intake
manifold bolts using the 3 step method. Failing to do so may distort the
crankshaft bearing bore alignment and cause damage to the crankshaft
bearings.




9.
Install the lower intake manifold
bolts.

Tighten







9.1.
Tighten the bolts on the first pass in sequence
(1–8) to 3 N·m (27 lb in).





9.2.
Tighten the bolts on the second pass in
sequence (1–8) to 12 N·m (106 lb in).





9.3.
Tighten the bolts on the final pass in sequence
(1–8) to 15 N·m (11 lb ft).

 


317211.gif
tif.gif





10.
Connect the evaporative emission (EVAP)
canister purge solenoid valve harness.







4.1
Push the elbow inward until the quick connect
snaps into place.







4.2
Pull the elbow outward in order to ensure
proper connection.
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