1995-2005 Chevrolet Astro Engine R&R Torque Specs

4.3L V6 Vortec

Applies to 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, and 2005 Chevrolet Astro

Labor Time:10 hours

Torque Values (17 specifications)

Component	Nm	lb-ft	Notes
⚠️ AC Compressor Bolts	25	18	—
⚠️ Alternator Mounting Bolts	50	37	—
Cover Bolts	19	14	—
Electrical Connector Bolts	8	6	—
⚠️ Engine Mount-to-Block Bolts	65	48	—
⚠️ Engine Mount-to-Frame Bolts	75	55	—
⚠️ Exhaust Manifold Nuts	30	22	Apply anti-seize, work hot-to-cold
⚠️ Flywheel Bolts	95	70	Often TTY, tighten in star pattern
⚠️ Gasket Bolts	20	15	—
⚠️ Gasket Surface Bolts	23	17	Clean mating surfaces
⚠️ Mounting Bolts	54	40	—
⚠️ Oil Drain Plug	35	26	Use new crush washer
⚠️ Power Steering Pump Bolts	25	18	—
Sensor Bolts	11	8	—
Sensor Mounting Bolts	12	9	—
⚠️ Starter Mounting Bolts	50	37	—
⚠️ Transmission-to-Engine Bolts	55	41	—

The primary torque specification for engine r&r on a 1995-2005 Chevrolet Astro is 25 Nm (18 lb-ft).

There are 17 torque specifications for engine r&r on the 1995-2005 Chevrolet Astro 4.3L V6 Vortec, covering all related fasteners and components.