Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET1990CHEVY VAN G20, 4.3 Z, 475/M40REPAIR AND DIAGNOSIS (SINGLE PAGE)TRANSMISSIONAUTOMATIC TRANSOVERHAUL & TESTING - 700-R4/4L60TORQUE SPECIFICATIONS
1990 Chevrolet Chevy Van G20, 4.3 Z, 475/M40
Torque Specifications
1990 Chevrolet Chevy Van G20, 4.3 Z, 475/M40SECTION Torque Specifications
TORQUE SPECIFICATIONS
| Application | Ft. Lbs. (N.m) | ||
|---|---|---|---|
| Cooler Pipe Connector | 28 (38) | ||
| Detent Spring-To-Valve Body Bolt | 18 (24) | ||
| Extension Housing Bolt | 26 (35) | ||
| Manual Shaft-To-Detent Lever Nut | 23 (31) | ||
| Oil Pump Cover-To-Body Bolt | 18 (24) | ||
| Oil Pump-To-Case Bolt | 18 (24) | ||
| Park Bracket-To-Case Bolt | 18 (24) | ||
| Pressure Plugs 1/4 X 18" | 18 (24) | ||
| Torque Converter-To-Flexplate Bolt | 46 (62) | ||
| INCH Lbs. (N.m) | |||
| Accumulator Cover-To-Case Bolt | 96 (11.0) | ||
| Auxiliary Valve Body Bolt | 96 (11.0) | ||
| Oil Pan-To-Case Bolt | 96 (11.0) | ||
| Oil Passage Cover Bolt | 96 (11.0) | ||
| Pressure Plugs 1/8 X 27" | 96 (11.0) | ||
| Pressure Switches | 96 (11.0) | ||
| Solenoid Bolt | 96 (11.0) | ||
| Speed Sensor Bolt | 89 (10.0) | ||
| T.V. Cable Bolt | 75 (8.5) | ||
| Valve Body-To-Case Bolt (1) | 96 (11.0) | ||
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.