Additionally, the LT2 can activate the new exhaust-scrubbers earlier thanks to new engine tuning, thus lowering emissions by 25 percent. This is a simplification over the two cats used on the LT1, and makes for a more economical design overall. The LT2 exhaust also has new catalytic converters, with one split-volume catalyst per cylinder bank. The end result is a 1-percent power increase compared to the LT1. The runners are all roughly 330 mm in length. This includes high-flow pipes and a four-into-one design with twisted runners that help to ease the stress of thermal expansion. On the other side of the combustion chamber, the 2020 Corvette engine comes with a ground-up exhaust redesign specifically tailored for the mid-engine application. The LT2 also uses an 87-mm throttle body. This improves output and increases flow, with three-percent power gains compared to the LT1’s intake manifold. The intake uses a low-restriction design with identical 210-mm-long intake runners, unlike the unequal-length runners on the LT1. That includes the intake manifold, which is bigger and taller compared to the LT1, up to 14.1 liters from the LT1’s 11.1 liters. “Much of the LT2’s additional power can be attributed to how much better it breathes,” Chevy says. Furthermore, the pan comes with a high-pressure die-cast construction for reduced mass. The LT2’s oil pan sports a low-profile design, which means the 2020 Corvette engine can be mounted 25 mm lower in the engine bay compared to the C7, thus providing a lower center of gravity and all the associated handling that entails.
The LT2’s pan-mounted oil filter and cooler assembly also comes with cored oil and coolant passages for a 25-percent increase in cooling capacity compared to the LT1. What’s more, the 2020 Corvette engine also requires less oil overall, with just 7.5 quarts to top it off – a reduction of 2.25 quarts compared to the LT1.
Chevrolet claims that the LT2 will maintain oil pressure at up to 1.25 G of lateral acceleration, which is critical for those C8 buyers looking to head to the track on weekends. While the LT1 did offer a dry-sump oil system, the engine-mounted dry-sump system used with the 2020 Corvette engine is a step above, with three scavenge pumps providing loads of lubrication, even during hard cornering. For example, packaging between the two engines is markedly different, with the LT2 forgoing the LT1’s considerations with regard to forward visibility.ĭelving deeper, we find the LT2 also offers improved lubrication over the LT1. That said, the 2020 Corvette engine was specifically engineered for the C8’s midship layout, unlike the front-mounted LT1. For example, both are naturally aspirated and offer 6.2L of displacement. However, that’s not to say there aren’t several similarities between these two V8 engines.
#Lt2 intake manifold upgrade#
Dubbed the LT2, the new 2020 Corvette engine is a considerable upgrade over the C7’s LT1, with a number of improvements for more power, greater reliability, and higher efficiency as well. In the move to an all-new mid-engine layout, the Chevrolet Corvette C8 also gains a brand-new powerplant.
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