1974 Chevrolet Impala 5.7L V8 VIN: T General Motors 16-Valve CARB 4BBL Naturally Aspirated OHV GAS. 1974 Chevrolet Impala 5.7L V8 VIN: J General Motors 16-Valve CARB 4BBL Naturally Aspirated OHV GAS. 1974 Chevrolet Impala 5.7L V8 VIN: L General Motors 16-Valve CARB 4BBL Naturally Aspirated OHV GAS.