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Automotive Torque Specifications

 Home Chevrolet GMC Chevrolet S-10 & GMC S-15 1982-93

Chevrolet S-10 and GMC S-15 1982-93



Component Torque
Camshaft Sprocket-to-Camshaft Bolts 21 ft. lbs.
Camshaft Thrust Plate Bolts 105 inch lbs.
Crankshaft Damper Bolt 70 ft. lbs.
Cylinder Head Bolts (Fig. 1) 65 ft. lbs.
Engine Mount-to-Engine Bolts 35 ft. lbs.
Engine Mount-to-Frame Bolts 52 ft. lbs.
Engine Mount Through Bolts 61 ft. lbs.
Nuts 52 ft. lbs.
Exhaust Manifold Bolts Non Turbo Engine All Bolts (Except center 2 bolts) 20 ft. lbs.
Center 2 Bolts 26 ft. lbs.
Turbo Engine (All Bolts) 33 ft. lbs.
Flywheel Bolts 75 ft. lbs.
Intake Manifold Bolts Intake Manifold/Lower Manifold (As applicable VIN Z & W) 35 ft. lbs.
Upper Intake Manifold Turbo (VIN Z) 18 ft. lbs.
CMFI (VIN W) 124 inch lbs.
Knock Sensor 14 ft. lbs.
Main Bearing Cap Bolts (Inthree steps) 80 ft. lbs.
Oil Pan Bolts 100 inch lbs.
Nuts at Corners 17 ft. lbs.
Oil Pump Bolts 65 ft. lbs.
Oxygen Sensor 30 ft. lbs.
Rocker Arm (With positive stop shoulders only) 20 ft. lbs.
Rocker Arm Cover 89-90 inch lbs.
Rod Bearing Nuts 1988-90 45 ft. lbs.
1991-93 20 ft. lbs. *
Starter 30-33 ft. lbs.
Thermostat Outlet-to-Engine Bolts VIN Z 21 ft. lbs.
VIN W 14 ft. lbs.
Throttle Body-to-Intake Manifold Bolts (Model 220 TBI) 12 ft. lbs.
Turbo Charger Mounting Nuts 33 ft. lbs.
Water Pump 30 ft. lbs.
* Torque nuts to 20 ft. lbs. then tighten an additional 70 degrees

Fig. 1 Cylinder head torque sequence-4.3L

Fig. 2 Intake manifold torque sequence-4.3L (VIN Z) throttle body fuel injection

Fig. 3 Lower intake manifold torque sequence-4.3L MFI

Fig. 4 Upper Intake manifold torque sequence-4.3L MFI

Fig. 5 Timing mark alignment-4.3L

Fig. 6 Firing order and cylinder arrangement-4.3L

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