Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
Cylinder Head Bolts:Tighten the cylinder head bolts sequentially in two steps.1st step torque: 45 Nm (33 ft. lbs.)2nd step torque: + 90°
Your question was for a 1997 as above........
Here is for 1998 ( which is the same):
50 Nm + 90°(37 ft. lbs. + 90°)
Tighten the bolts to 45 Nm (33 ft. lbs.) in the sequence shown. Use the J 36660 in order to tighten the bolts an additional 90°.