Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET1986C 10 P/U 2WD V8-350 5.7LREPAIR AND DIAGNOSISENGINE, COOLING AND EXHAUSTENGINECYLINDER HEAD ASSEMBLYROCKER ARM ASSEMBLYSERVICE AND REPAIR
1986 Chevrolet C 10 P/U 2WD V8-350 5.7L
Rocker Arm Assembly: Service and Repair
1986 Chevrolet C 10 P/U 2WD V8-350 5.7LSECTION Service and Repair
Fig. 24 Rocker arm stud removal. Exc. V6-231 & V8-454:
Fig. 25 Rocker arm stud installation. Exc. V6-231 & V8-454:
EXC. V6-231
Rocker arm studs that have damaged threads may be replaced with standard studs. Loose studs should be replaced with .003 inch or .013 inch oversize studs which are available for replacement.
Remove the old stud by placing a suitable spacer over the stud, Fig. 24. Install a nut and flat washer on the stud and pull out the stud by turning the nut. After reaming the hole for an oversize stud, coat the press-fit area of the new stud with rear axle lubricant. Install the stud by driving it in until it protrudes from the head the same distance as the other studs, Fig. 25. On V8-454, the rocker arm studs are threaded into the cylinder head. Coat threads on cylinder head end of stud before assembling to head.
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.