Pontiac discontinued its 400-inch Pontiac V-8 after the 1978 model year, but tens of thousands of 1978 and 1979 Formulas and Trans Ams received with the basic L78 or optional T/A 6.6 in those model years. Have you ever tried documenting the originality one? Those produced at Van Nuys can have their engine’s partial VIN stamp in a couple of locations. Here’s where you can find them!