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Jay
Jay, Chevy Mechanic
Category: Chevy
Satisfied Customers: 596
Experience:  Several yrs experience, GM Trained,
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What is the tightening sequence for cylinder heads on a 99

Customer Question

What is the tightening sequence for cylinder heads on a 99 Chevy Suburban 5.7 Vortec?
Submitted: 8 years ago.
Category: Chevy
Expert:  Jay replied 8 years ago.

HelloCustomer here is the information you are looking for, please reply if you have any questions, thanks.

  • Install the cylinder head bolts.

    Tighten
    Tighten the bolts in sequence on the first pass to 30 N·m (22 lb ft).


    Object Number: 500687  Size: SH

  • Use the J 36660-A in order to tighten the cylinder head bolts in sequence on the final pass.

    Tighten

    Tighten the long bolts (1, 2, 5, 6, 9, 10, and 13) on the final pass in sequence to 75 degrees.
    Tighten the medium bolts (14 and 17) on the final pass in sequence to 65 degrees.
    Tighten the short bolts (3, 4, 7, 8, 11, 12, 15, and 16) on the final pass in sequence to 55 degrees.

  • Jay and 6 other Chevy Specialists are ready to help you
    Expert:  Jay replied 8 years ago.
    Check out the image on the last post the sequence is the numbers.