Re: What is the biggest engine?
You are both right. The 396 was the largest engine you could walk in and order using the RPO, regular production order. But if you wanted to order a fleet of 50 using the COPO, central office production order process, you could have had a larger engine installed. That is how the 69 or so ZL1 427 Camaros came to be. Many dealers offered new Camaros with engine swaps for larger than the 396 the factory was offering, but those would not be "factory" ordered cars.
"..............what, and get out of aviation??"