New 6.2-liter DOHC LT5 V8 engine bound to arrive in 2018 Chevrolet Corvette

Article by Christian A., on January 19, 2017

The 2018 model year could be an exciting year for fans and enthusiasts of the Chevrolet Corvette. This comes as the 2018 version of the Corvette is bound to feature a powerful 6.2-liter DOHC V8 LT5 engine; although it remains unknown which Corvette would be lucky enough to be fitted with this new powerplant.

This development was not officially confirmed yet by GM, but this is neither a rumor or speculation. This development was confirmed by an internal document from the GM service department. The fifth page of this internal document – which contains information such as internal codes that will be employed for the 2018 model year vehicles – shows a table in which a section was dubbed as “Passenger Car Engines for GMNA.”

On the last portion of this section, the following descriptions were listed: ENGINE GAS 8 CYL, 6.2L, SIDI, DOHC, VVT, ALUM and GM. This means that this new powerplant is a 6.2-liter gasoline aluminum V8 engine with Spark Ignition Direct Injection (SIDI) and Variable Valve Timing (VVT) technologies. In addition, this engine is catalogued with the book code “Y,” which internally means that this powerplant will only be fitted in the Corvette with an internal name LT5.

Interestingly, the internal name LT5 was the moniker given to the only other DOHC V-8 engine for Corvette -- the Lotus-designed aluminum-block engine powering the C4 ZR-1. As to which Corvette model that would receive this new 6.2-liter DOHC V8 LT5 engine, two vehicles come in mind – a new C7 Corvette ZR1 and a new C8 Corvette mid-engine car. Both the C7 ZR1 and the C8 mid-engine are up and coming models for Chevrolet in the 2018 model year, which means the 6.2-liter DOHC V8 LT5 powerplant would be installed in any of these two vehicles.

It seems, however, that the C7 ZR1 would get the better hand over the C8 mid-engine. Its ancestor – the C4 ZR1 – also features an aluminum DOHC V8 LT5 engine that shares a name with the new engine described in GM’s internal document. However, there has to be some issues that need to be addressed before Chevrolet could fit the new 6.2-liter DOHC V-8 engine into the C7 ZR1 like the amount of available (should it be more powerful than Z06 with 650 hp) power as well as packaging.

It is also possible that the 6.2-liter DOHC V-8 engine would be fitted into the C8 mid-engine, but this new Corvette is rumored to arrive for the 2019 model year at the earliest. Since the 6.2-liter DOHC V-8 engine -- as the internal document indicates -- will be fitted into a 2018 model year Corvette, the 2019 C8 mid-engine is less likely to be picked. However, there is also the possibility that the 6.2-liter DOHC V-8 engine would be fitted first into the C7 ZR1, and then to the C8 mid-engine.

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