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It features a hand-built, 5.5 liter V-8 engine capable of roaring at 8,600 revolutions per minute without using a turbocharger or a battery-booster.

Barnes’ truck spent a week at Banks’ garage, where a new cold air intake, a new exhaust system and a replacement intercooler was installed along with a turbocharger upgrade.

That cutting-edge technology was called a turbocharger.

Not even the General Motors Heritage Center’s archives — with enough documents to stuff a file drawer nearly three miles long — hint at why not one but two turbocharger projects were greenlighted in the late 1950s.

Those devices crippled the turbocharger often enough to render it largely useless.