General Motors is dusting off a very familiar engine code in the near future. First posted to Reddit, internal GM documents have revealed the LT5 V8 engine is returning, and it’s coming for the 2018 model year.
Specifically, it will be a 6.2-liter LT5 DOHC V8 engine, as coded in a table in the document of “Passenger Car Engines For GMNA.” At the very end of the table, there it sits: “ENGINE GAS CYL, 6.2L, SIDI, DOHC, VVT, ALUM, GM,” with the book code “Y”. In GM speak, that means it will be exclusively used in the 2018 Corvette.
There has only been one other DOHC V8 engine in the Corvette’s history, and it was the C4 Corvette ZR-1. It’s quite likely the Corvette team and General Motors will reintroduce a modern LT5 V8 engine when the 2018 C7 Corvette ZR1 decides it’s ready to show face.
Furthermore, the 6.2-liter LT1 V8 and 6.2-liter LT4 supercharged V8 engine are both still listed in the 2018 engine document. From that, we can gather the LT5 V8 will not replace either of those engines, but instead be reserved for something new altogether.
However, the table makes no mention of forced induction.
If the 2018 C7 Corvette ZR1 is going to be the most powerful Corvette we’ve seen, it will have to outdo the 650 hp produced from the 6.2-liter LT4 supercharged V8 engine. It’s hard to imagine GM working some wizardry to surpass 650 hp without superchargers or turbos.
If we move past the Corvette ZR1, the next logical option would be the all-but-confirmed mid-engine Corvette. Of course, all we can do is speculate on such a car, but a 6.2-liter LT5 V8 engine seems like a good starting point for what could be a revolutionary Corvette.
We don’t know where exactly this reborn LT5 V8 engine will end up, but it’s coming to a Corvette near you very, very soon.