You will not find a single torque value applicable to all Turbo 350 oil pans.
To find the correct torque specification, you must:
1. Identify the oil pan: Determine the manufacturer (e.g., aftermarket brand, or original GM if applicable) and part number if possible.
2. Consult the instructions: Check the instructions or documentation that came with the oil pan. This is the most reliable source.
3. Check a reputable repair manual: A good repair manual for the specific year and model of vehicle with the Turbo 350 transmission will list the proper torque specification. Factory service manuals are best.
4. Use a torque wrench: Never rely on "feel" when tightening bolts. Always use a properly calibrated torque wrench to avoid stripping threads or damaging the oil pan.
If you can't find the specific torque value, err on the side of caution and use a lower torque than you might guess. It's better to have a slightly loose bolt than a stripped one. If uncertain, consult a qualified mechanic.
