Here's a general outline of the process. This is not a complete, step-by-step guide, and specific details might vary slightly depending on the exact condition of your car. Consult a 1972 Corvette repair manual for detailed instructions and diagrams. These manuals are invaluable and will show you exactly where everything is located and how it should be removed.
Steps (General):
1. Safety First: Disconnect the negative battery cable. This prevents accidental sparks. Ventilate the area well. Consider working outdoors or in a well-ventilated garage.
2. Fuel System Preparation:
* Drain the gas tank: This is crucial. Use a siphon pump or drain valve (if equipped) to remove as much fuel as possible. Dispose of the fuel properly according to local regulations.
* Disconnect the fuel lines: Carefully disconnect the fuel supply and return lines at the tank. You'll likely need fuel line disconnect tools to avoid damaging the lines. Have rags ready to soak up any spilled fuel.
* Disconnect the fuel sender unit: This unit measures the fuel level and is usually wired into the tank. Disconnect the electrical connector carefully.
3. Remove the Gas Tank Straps: Locate the straps securing the tank to the car's frame. These are usually metal straps bolted to the frame and tank. Carefully remove the bolts.
4. Disconnect the Vent Line: Find the vent line connected to the tank; disconnect it carefully.
5. Lower the Gas Tank: With the straps and lines disconnected, carefully lower the gas tank. It might be heavy, so have help if needed. You might need to maneuver it around the exhaust system and other components.
6. Inspect and Clean (Optional): Once the tank is removed, this is a great opportunity to inspect it for rust or damage. You can also clean the area where the tank sits.
7. Reassembly: Reassembly is the reverse of the removal process. Ensure all connections are secure and tight before refilling the tank.
Important Considerations:
* Rust: 1972 Corvettes are susceptible to rust, especially in the area around the gas tank. Be prepared for potential challenges due to rusted bolts or brackets. Penetrating oil might help loosen stubborn fasteners.
* Tools: You'll need various tools, including sockets, wrenches, screwdrivers, possibly a fuel line disconnect tool, and potentially a jack and jack stands to get better access.
* Fuel: Handle fuel with extreme care. Spills can be dangerous and environmentally harmful.
* Repair Manual: A shop manual specific to your 1972 Corvette is strongly recommended. It will provide detailed illustrations and instructions, making the process much easier and safer.
This is a simplified overview. A detailed repair manual is essential for a safe and successful gas tank removal. If you are not comfortable with automotive repair, it's best to have a qualified mechanic perform this task.
