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!
numbers crunching
Did Pontiac Repurpose a Leftover 1972 455 H.O. Block?
Pontiac10 CommentsI was contacted by the owner of code-ZE 455 who questioned its true origin because of someone’s handiwork with a grinder. We seemingly determined that the ZE-code 455 was originally assembled as a WD-code 455 H.O. during the 1972 model year, and was then re-purposed for 1973 when it was leftover from the strike-shortened 1972 model year. Does that seem far fetched? You be the judge!