If you are still running a manual fuel pump, it can make a noise. Don't forget to listen to it with Stethoscope. (Works much better than a garden hose, but not as inventive.)
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The 1970 SWB Project
Removed 6cyl manual trans, manual everything
V8-350
Auto/PS/PDB
Blazer Fuel Tank
Behind the Marker Light Fuel Fill
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