Long Block Replacement Torque Specifications

2003-2024 Chevrolet Express 4.3L V6

Labor Time:14.4 hours

Torque Values (36 specifications)

Component	Nm	lb-ft	Notes
Camshaft Cap Bolts	14	10	Tighten in sequence from center outward, multiple passes
⚠️ Camshaft Cap Bolts	14	10	Tighten in sequence from center outward, multiple passes
Connecting Rod Bolts	45	33	TTY - critical torque plus angle
⚠️ Connecting Rod Bolts	45	33	TTY - critical torque plus angle
Cover Bolts	16	12	—
Cover Bolts	16	12	—
Cylinder Head Bolts	65	48	TTY - tighten in sequence plus angle
⚠️ Cylinder Head Bolts	65	48	TTY - tighten in sequence plus angle
⚠️ Exhaust Manifold Nuts	30	22	Apply anti-seize, work hot-to-cold
Exhaust Manifold Nuts	30	22	Apply anti-seize, work hot-to-cold
⚠️ Flywheel Bolts	95	70	Often TTY, tighten in star pattern
Flywheel Bolts	95	70	Often TTY, tighten in star pattern
Gasket Bolts	20	15	—
⚠️ Gasket Bolts	20	15	—
Intake Manifold Bolts	25	18	—
⚠️ Intake Manifold Bolts	25	18	—
⚠️ Main Bearing Cap Bolts	75	55	TTY - tighten in sequence plus angle
Main Bearing Cap Bolts	75	55	TTY - tighten in sequence plus angle
⚠️ Mounting Bolts	47	35	—
Mounting Bolts	47	35	—
Mounting Bolts	27	20	—
Mounting Bolts	27	20	—
⚠️ Oil Drain Plug	35	26	Use new crush washer
Oil Drain Plug	35	26	Use new crush washer
Oil Pan Bolts	12	9	—
⚠️ Oil Pan Bolts	12	9	—
Sensor Bolts	11	8	—
Sensor Bolts	11	8	—
Timing Chain Tensioner Bolt	25	18	Install with pin/clip to compress
⚠️ Timing Chain Tensioner Bolt	25	18	Install with pin/clip to compress
Timing Cover Bolts - 8mm	25	18	Tighten in sequence
⚠️ Timing Cover Bolts - 8mm	25	18	Tighten in sequence
Transmission-to-Engine Bolts	55	41	—
⚠️ Transmission-to-Engine Bolts	55	41	—
Valve Cover Bolts	10	7	Tighten in sequence
Valve Cover Bolts	10	7	Tighten in sequence

Other Jobs with Torque Specs

Common Questions

What is the torque spec for long block replacement on a 2003-2024 Chevrolet Express?

The primary torque specification for long block replacement on a 2003-2024 Chevrolet Express is 14 Nm (10 lb-ft). Note: Tighten in sequence from center outward, multiple passes

How many torque specs are there for Chevrolet Express long block replacement?

There are 36 torque specifications for long block replacement on the 2003-2024 Chevrolet Express 4.3L V6, covering all related fasteners and components.