General Motors LS-based small-block engine: Difference between revisions

Revision as of 02:41, 21 July 2025

Revision as of 19:13, 4 August 2025

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** 2015–2017 [[Holden Caprice#WN|Holden WN II Caprice]]

** 2015–2017 [[Holden Commodore (VF)|Holden VF II Commodore]]

*2012 [[AC 378 GT Zagato]]

*2015 [[SIN R1]] 450

*2016 [[Arrinera Hussarya]]

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Applications:

* 2009–2013 [[Chevrolet Corvette (C6)#ZR1|Chevrolet Corvette ZR1]]

* 2015 [[Equus Bass 770]]

* 2016 [[Icona Vulcano|Icona Vulcano Titanium]]

* 2017 [[Holden Special Vehicles GTS|HSV GTSR W1]]

* 2015–present [[SIN R1]] 650

* 2016 [[Icona Vulcano|Icona Vulcano Titanium]]

* 2016 [[VLF Destino]]

* 2017 [[Holden Special Vehicles GTS|HSV GTSR W1]]

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{{For|the 5.7 L Generation II engine of the same RPO|Chevrolet small-block engine (first- and second-generation)#LT4}}

The {{cvt|6162|cc|L cuin|1|order=flip}} LT4 engine builds on the design strengths of the previous LS9 [[supercharged]] engine used in the sixth-generation Corvette ZR1 and leverages the technologies introduced on the seventh-generation Corvette Stingray, including direct injection, cylinder deactivation, and continuously variable valve timing, to take Corvette performance to an all-new level. The LT4 engine is based on the same Gen 5 small block foundation as the Corvette Stingray's LT1 6.2L 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, enhanced performance and efficiency 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.<ref>{{Cite web|url=http://gmauthority.com/blog/gm/gm-engines/lt4/|title=GM 6.2 Liter Supercharged V8 Small Block LT4 Engine|website=GM Authority|date=April 16, 2014|language=en-us|access-date=September 8, 2017|url-status=live|archive-url=https://web.archive.org/web/20170911020726/http://gmauthority.com/blog/gm/gm-engines/lt4|archive-date=September 11, 2017|df=mdy-all}}</ref> The engine uses a {{cvt|1.7|L|cuin|1}} Eaton TVS Supercharger. Although smaller than the previous {{cvt|2.3|L|cuin|1}} supercharger used on the sixth-generation ZR1, it spins to 5000&nbsp;rpm faster thus generating boost quicker while making only slightly less total boost than the LS9 engine.<ref>{{Cite web|url=http://www.gizmag.com/corvette-z06-debut-naias/30441/|title=The torque's the thing: 625-hp Z06 Corvette debuts in Detroit|date=January 13, 2014|website=www.gizmag.com|publisher=Gizmag|last=Mackenzie|first=Angus|url-status=live|archive-url=https://web.archive.org/web/20150906052213/http://www.gizmag.com/corvette-z06-debut-naias/30441/|archive-date=September 6, 2015|df=mdy-all}}</ref> The Escalade-V variant uses a {{cvt|2.7|L|cuin|1}} Eaton TVS supercharger. This engine is also used by [[Scuderia Cameron Glickenhaus]] for their [[SCG 004]]S.<ref>{{cite magazine|url=https://www.roadandtrack.com/new-cars/a13795442/2019-scg-004s-photos-info/|title=2019 SCG 004S: This Is Glickenhaus's Volume Road/Race Car|magazine=[[Road & Track]]|___location=Online|date=November 17, 2017|first=Máté|last=Petrány|access-date=July 18, 2022}}</ref> The limited production [[IsoRivolta GTZ]], which is based on the C7 Z06, also uses the LT4 engine.

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