Chevrolet S-10 and GMC S-15 1982-93 2.5L

2.5L
Component			Torque
Camshaft Thrust Plate-to-Engine Bolts			90 inch lbs.
Crankshaft Damper Bolt			160 ft. lbs.
Cylinder Head Bolts (Fig. 2)	1985-88		90 ft. lbs.
Cylinder Head Bolts (Fig. 2)	1989-93		*
Engine Mount-to-Engine Bolts			35 ft. lbs.
Engine Mount-to-Frame Bolts			52 ft. lbs.
Engine Mount Through Bolts	Bolts		61 ft. lbs.
Engine Mount Through Bolts	Nuts		52 ft. lbs.
Exhaust Manifold Retainers	All (Except center Retainers)		32 ft. lbs.
Exhaust Manifold Retainers	Center Retainers		36 ft. lbs.
Flywheel Bolts	Automatic		55 ft. lbs.
Flywheel Bolts	Manual		65 ft. lbs.
Intake Manifold	Early Models (With bolts and studs)		25-37 ft. lbs. **
Intake Manifold	Late Models (Using only bolts)		25 ft. lbs.
Knock Sensor			14 ft. lbs.
Main Bearings (In three steps)			70 ft. lbs.
Oil Pan			90 inch lbs.
Oil Pump Bolts			18 ft. lbs.
Oil Pump Pickup Tube Nut			31 ft. lbs.
Oxygen Sensor			30 ft. lbs.
Pushrod Cover	Studs		88 inch lbs.
Pushrod Cover	Nuts		106 inch lbs.
Rocker Arm Bolt			22 ft. lbs.
Rocker Arm Cover			75 inch lbs.
Rod Bearing Nuts		All (Except 1992)	32 ft. lbs.
Rod Bearing Nuts		1992	39 ft. lbs.
Starter			30-33 ft. lbs.
Thermostat Housing-to-Engine Bolts			18-20 ft. lbs.
Throttle Body-to-Intake Manifold Bolts		Early 2.5L's (With model 300 TBI throttlebody)	13 ft. lbs.
Throttle Body-to-Intake Manifold Bolts		Late 2.5L's (With model 700 TBI throttlebody)	12 ft. lbs.

Automotive Torque Specifications
Home	Chevrolet	GMC	Chevrolet S-10 & GMC S-15 1982-93

Step 1:** Tighten all head bolts to 18 ft. lbs.				Top of page
**Step 2: Tighten all bolts to 26 ft. lbs. (except #9)
**Retorque #9 to 18 ft. lbs.
**Step 3: Tighten all an additional 90 degrees
** Each bolt may have it's own torque value (See fig. 1)

Fig. 1 Intake manifold mounting-2.5L
Fig. 2 Cylinder head bolt torque sequence-2.5L	Fig. 3 Timing mark alignment-2.5L