Cylinder head torque specifications

Cylinder Head:
For SOHC engines, tighten the cylinder head bolts, in the sequence shown, to the following specifications:
Step 1: Tighten the bolts to 25 ft. lbs. (34 Nm).
Step 2: Tighten the bolts to 50 ft. lbs. (68 Nm).
Step 3: Loosen, then re-tighten the bolts to 50 ft. lbs. (68 Nm).
Step 4: Tighten all bolts an additional 1/4 turn. Do NOT use a torque wrench for this step.

For DOHC engines, tighten the cylinder head bolts, in the sequence shown, to the following specifications:
Step 1: Tighten bolts 1-6 to 25 ft. lbs. (34 Nm) and bolts 7-10 to 20 ft. lbs. (28 Nm).
Step 2: Tighten bolts 1-6 to 50 ft. lbs. (68 Nm) and bolts 7-10 to 20 ft. lbs. (28 Nm).
Step 3: Loosen, then re-tighten bolts 1-6 to 50 ft. lbs. (68 Nm) and bolts 7-10 to 20 ft. lbs. (28 Nm).
Step 4: Tighten all bolts an additional 1/4 turn. Do NOT use a torque wrench for this step.

Rocker Arms:
21 ft. lbs. (24 Nm) in the sequence shown in the accompanying figure