Revised Cylinder Head Bolt Torque Specification and Tightening Sequence for 1994-2002 GM 3.1L and 3.4L Engines
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This bulletin is a clarification of the revised cylinder head bolt torque and tightening sequence bulletin.
The updated sequence and specification is as follows:
• Tighten the cylinder head bolts to 44 ft.lbs (60 N-m) in the ordershown in illustration. Use the J 36660-A torque angle meter in order torotate the cylinder head bolts an additional 95 degrees.
Please note that 95° is just a little more than a 1/4 turn, not 1/2 turn, orfrom 12 o’clock to 3 o’clock on the dial. Do not tighten beyond thisspecification, otherwise the bolts will be overstressed and the gasketsmay suffer damage.
Some or all of this information was provided by the AutomotiveParts Remanufacturers Association (APRA). For more information ontechnical bulletins available through APRA call 703-968-2772 or visit www.AutoBulletins.com.
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