level. The LT4 engine is based on the same Gen 5 small block foundation as the Corvette Stingray's LT1 6.2 L naturally aspirated engine, incorporating several unique features designed to support its higher output and the greater cylinder pressures created by forced induction, including: Rotocast A356T6 aluminum cylinder heads that are stronger and handle heat better than conventional aluminum heads, lightweight titanium intake valves, forged powder metal steel connecting rods, 10.0:1 compression ratio, enhances performance and efficiency and is enabled by direct injection, forged aluminum pistons with unique, stronger structure to ensure strength under high cylinder pressures, stainless steel exhaust manifolds for structure at higher temperatures, aluminum balancer for reduced mass, and standard dry-sump oiling system with a dual-pressure-control oil pump. The engine uses a Eaton TVS Supercharger. Although smaller than the previous supercharger used on the sixth-gen ZR1, it spins to 5000 rpm faster thus generating boost quicker while making only slightly less total boost than the LS9 engine. The Escalade-V variant uses a Eaton TVS Supercharger. This engine is also used by Scuderia Cameron Glickenhaus for their SCG 004S. Applications: LT5 The LT5 engine debuted in the seventh-generation Corvette ZR1 at the 2017 Dubai Motor Show. It draws its name from the 5.7 L LT5 from the C4, and was manufactured from 1989–1993. The original LT5 is rarely known as a Chevy small block V8, as it was designed by Lotus, built by Mercury Marine, and implements a DOHC 32-valve multi-port injection system, instead of the 16-valve push-rod design. The new (and unrelated) LT5, however, has increased its displacement from , retains the Gen V OHV valvetrain, and is topped with a Eaton TVS supercharger and an improved intercooler. It simultaneously couples the standard direct injection system found on Gen 5 engines with port fuel injection. Power output is at 6400 rpm and of torque at 3600 rpm. Applications: 6.6 L L8T The L8T is the first iron block member of the Gen V family. It shares its bore with the L86, but with a longer stroke of to displace . It is rated for at 5,200 rpm and of torque at 4,000 rpm. The compression ratio is 10.8:1. The longer stroke yields little additional peak torque output compared to the L86, but only requires 87 Octane. The stroke is also shorter than the LS7's , to optimize rod ratio for reliability. Rather than allow a "high-strung" small