Short Block Replacement Torque Specifications

1990-2000 Lexus LS 400 4.0L V8

Labor Time:15 hours

Torque Values (14 specifications)

Component	Nm	lb-ft	Notes
⚠️ Connecting Rod Bolts	45	33	TTY - critical torque plus angle
Cover Bolts	19	14	—
⚠️ Crankshaft Pulley Bolt	180	133	Often TTY - check spec, may require impact
⚠️ Flywheel Bolts	95	70	Often TTY, tighten in star pattern
⚠️ Gasket Bolts	23	17	—
⚠️ Main Bearing Cap Bolts	75	55	TTY - tighten in sequence plus angle
Mounting Bolts	31	23	—
⚠️ Mounting Bolts	55	40	—
⚠️ Oil Drain Plug	35	26	Use new crush washer
⚠️ Oil Pan Bolts	12	9	—
⚠️ Oil Pump Bolts	12	9	—
Sensor Bolts	12	9	—
⚠️ Timing Cover Bolts - 8mm	25	18	Tighten in sequence
⚠️ Transmission-to-Engine Bolts	55	41	—

The primary torque specification for short block replacement on a 1990-2000 Lexus LS 400 is 45 Nm (33 lb-ft). Note: TTY - critical torque plus angle

There are 14 torque specifications for short block replacement on the 1990-2000 Lexus LS 400 4.0L V8, covering all related fasteners and components.