C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Torque specs-89L98-Intake manifold???

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Old Sep 9, 2002 | 03:17 AM
  #1  
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6spd89
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Burning Brakes
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Default Torque specs-89L98-Intake manifold???

Does someone have them available.Don't want to trust Haynes on this
one. They did not seem very tight upon teardown and I want it to seal
properly........Who wouldn't??? I will also be using the black rtv for the
ends. Thanks,
Matt
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Old Sep 9, 2002 | 04:29 AM
  #2  
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Default Re: Torque specs-89L98-Intake manifold??? (6spd.89)

Well, seeing as how Haynes listed different sequences corresponding to the different manifolds, I assumed they got it right. Had no problems so far.
If you number the bolts in the same manner as the spark plugs, go as follows for '85-91. I do agree, it does seem fishy do do one whole side, before tightening the other.

3, 1, 5, 7, 9, 11, 4, 2, 6, 8, 10, 12
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Old Sep 9, 2002 | 05:41 AM
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Default Re: Torque specs-89L98-Intake manifold??? (6spd.89)

The '88 Corvette GM Shop Manual states for the intake base:
torque=35 ft-lbs,
snugging sequence=4,3,9,10,11,12;
tightening sequence=1,2,3,4,5,6,7,8,9,10,11,12.

-7--8-------9--10----11--12
-O--O------O--O------O--O-

<--Front

-O--O------O--O------O--O-
-1--2-------3--4-------5--6-
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Old Sep 9, 2002 | 06:01 AM
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Default Re: Torque specs-89L98-Intake manifold??? (65Z01)

:cool:
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