General Motors is fairly notorious for leaking future product information, and that appears to have happened again with an alleged “LT5” V-8. Thanks to a keen Reddit user, internal GM documents surfaced showing the LT5 as a 6.2-liter DOHC V-8 for the Corvette.
Located on a GM service site, the company’s 2018 “VIN card” was discovered by the user, which lists all passenger car engines for the 2018 model year. In this case, the LT5 is listed as an aluminum block DOHC engine with direct injection, active fuel management and variable valve timing. The book code also suggests it is an engine reserved exclusively for Corvette.
This isn’t the first time rumors of an LT5 or DOHC engine have surfaced. The LT5 moniker actually has a history at GM as powering the Corvette ZR-1 back in 1990 for the C4. That LT5 was a DOHC V-8 actually developed by Lotus Engineering as a high-revving, naturally aspirated engine. Built by Mercury Marine, the V-8 generated 375 horsepower and 370 pound-feet of torque.
We’re assuming this LT5 will be much the same and likely the engine of choice for the 2018 Corvette ZR1. The alleged new ZR1 has been spied several times with some intense aero bodywork and thick tires. GM has not confirmed the existence of a C7 based ZR1, but the Corvette team is quick to say that they “makes news every year.”
Earlier LT5 rumors suggested the engine would debut in the rumored mid-engined C8 Corvette. While it may find its way into that car as well, we don’t think the mid-engine car will be a 2018 model, which is why we’re working on the assumption the LT5 will be in the C7 ZR1 first.
h/t: The Drive