The average muscle car is over 40 years old now, and it’s easy to forget that it lived a full life during that time — a life that likely filled its original fuel tank with rocks and rust scale. If you’ve ever run an old car out of gas, you probably cursed this stuff as you cleared it out of your fuel lines.
Worse yet are slow leaks from rear-end damage, which are a common problem on tanks that fill from behind the rear license plate. That’s exactly what happened to my ’66 Caprice some time in its past, causing a slow leak that made my garage smell like fuel after every fill-up — not safe, and a sure-fire way to get the car booted from any indoor event, be it an auction or a show.
Fortunately, pulling a tank on a GM car from the 1960s is not a tough job, either to have it cleaned out or to simply replace it. So we went to World of Speed’s shop in Wilsonville, OR, to show you how to do it.
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