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 MANUALSCHEVROLET1966SUBURBAN 3.8L ENG VIN SREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE MECHANICALMECHANICALGENERAL MOTORS 4-CYL ENGINESTORQUE SPECIFICATIONS
1966 Chevrolet Suburban 3.8L Eng VIN S
Torque Specifications
1966 Chevrolet Suburban 3.8L Eng VIN SSECTION Torque Specifications
TIGHTENING SPECIFICATIONS
| Application | Ft. Lbs. | |
|---|---|---|
| Cylinder Head | 95 | |
| Intake & Exhaust Manifold Assy. | ||
| 1965-71 (Outer) | 20 | |
| 1965-71 (Inner) | 30 | |
| 1972-74 (All) | 30 | |
| Main Bearing Cap Bolts | 65 | |
| Connecting Rod Nuts | ||
| All (Exc. 292") | 35 | |
| 292" | 40 | |
| Camshaft Thrust Plate | 80 INCH Lbs. | |
| Flywheel Bolts | ||
| All (Exc. 1967-74 292") | 60 | |
| 1967-74 292" | 110 | |
| Harmonic Balancer Bolt (292" Only) | 60 | |
RENDER: 1.0x
NO RELATED
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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.