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1999 Buick Century Question: I need the torque specs for the Plenum on a 1999 buick century custom

 

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Angelicabear, Donie, TX, January 02, 2011, 18:09
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have replaced the intake manifold, but the kit doesnt come with the torque specs and have found them for the heads and intake but not the Plenum.

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  • Answer #1

    joelburke26 from Joels Auto Service, January 02, 2011, 18:35
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    Intake Manifold Coolant Pipe Bolt .... 89 in lbs (7.4166 ft. lbs)
    Lower Intake Manifold Bolt .............. 115 in. lbs (9.5833 ft. lbs)
    Upper Intake Manifold Bolt/Stud ...... 18 ft. lbs
    Valve Rocker Arm Bolt ................... 168 in. lbs (14 ft. lbs +30 degress

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