Cadillac’s first brand-exclusive engine in years, the 4.2-liter LTA twin-turbo V8 engine, will not serve as the basis for other engines.
Unlike rival makes, Cadillac’s V8 engine sits as is, and engineers don’t plan to lob off two cylinders to create a dual-overhead-cam V6 engine, our affiliate publication Cadillac Society reported last Friday.
General Motors’ V8 chief engineer Jordan Lee told the publication, “Whether it was engineered that way (to accommodate V6 engines), no.”
From Lee’s remarks, the LTA V8 engine will clearly serve one purpose for now: providing kick-in-the-pants power to the 2019 Cadillac CT6 V-Sport and much-needed power for the regular 2019 CT6. He insinuated there would still be additional engineering and development costs to build a derivative associated with the new V8 engine.
Lee said it doesn’t mean engineers can’t do it, but the idea was never part of the engine program from the start.
“Anything can be engineered… if we wanted to re-engineer (the LTA) as naturally aspirated, we could. If we wanted to re-engineer it as a V6, we can do that, too,” he said.
Other automakers have consolidated engine families over the years. Mercedes-Benz now has an inline-six engine based on its four-cylinder engine architecture, while Alfa Romeo utilizes a high-strung 90-degree twin-turbo V6 that was born from a Ferrari V8. GM rolled out a new V6 engine with the introduction of the Cadillac CT6, with the 3.6L LGX and 3.0L LGW twin-turbo V6 engine. The V6 engines share nothing in common with either GM’s four or eight-cylinder engine families.