engine

Flexplate Torque Specs

for 1990 Pontiac Firebird 5.7L V8 LS1 · RWD

Units

11 fasteners

Seq

Component

Torque

Angle

—

Cover Bolts

16 lb-ft · 22 Nm

—

Electrical Connector Bolts

7 lb-ft · 9 Nm

—

Flexplate Bolts

Critical

Automatic transmissions | ⚠️ VERIFY SEQUENCE WITH SERVICE MANUAL

63 lb-ft · 85 Nm

—

Flywheel/Flexplate Bolts

Critical

Step 1: 15 lb-ft. Step 2: 37 lb-ft. Step 3: 74 lb-ft. Thread locker required.

15 lb-ft · 20 Nm

—

Gasket Bolts

Critical

20 lb-ft · 27 Nm

—

Gasket Surface Bolts

Critical

Clean mating surfaces

20 lb-ft · 27 Nm

—

Mounting Bolts

Critical

47 lb-ft · 64 Nm

—

Sensor Bolts

11 lb-ft · 15 Nm

—

Sensor Mounting Bolts

11 lb-ft · 15 Nm

—

Torque Converter Bolts

Critical

⚠️ VERIFY SEQUENCE WITH SERVICE MANUAL

37 lb-ft · 50 Nm

—

Transmission-to-Engine Bolts

Critical

⚠️ VERIFY SEQUENCE WITH SERVICE MANUAL

41 lb-ft · 55 Nm

—

1990 PONTIAC FIREBIRD

11 fasteners