A 1966 Chevrolet Impala with an unknown engine has ignited a fierce bidding war on eBay, climbing to $8,300 with over 40 bids. The no-reserve listing has drawn attention despite limited mechanical disclosure, highlighting buyer appetite for classic car projects.

That model year was key for Chevrolet’s full-size line, as the Caprice became its own series, affecting Impala sales. Over 2.2 million Chevys were sold overall, though full-size demand began to wane. The Impala SS remained popular, with 119,300 units sold.

The car’s body appears solid but shows signs of an old repaint. Inside, the cabin is largely original. Under the hood, a running V8 engine of uncertain origin hints at potential. Experts say engine identity could drastically alter auction value when bidding ends in Pahrump, Nevada.