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

Revision as of 17:17, 25 February 2025

Revision as of 03:12, 1 March 2025

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A {{cvt|396|cid|L|1}} version engineered by [[Ilmor]] is used in [[NASCAR]] for the [[NASCAR Craftsman Truck Series|Craftsman Truck Series]] and the [[ARCA Racing Series]] as an option engine. Most teams in both series (known as "NT1" in the Truck Series and the "ARCA 396" in ARCA) have switched to the engine because of cost savings, as engines must last 1,500 miles and rebuilds are about one-thirds the cost of a new engine.<ref>{{cite web|url=https://www.enginelabs.com/news/ilmor-396-arca-engine-saves-money-lays-off-engine-builders/|title=Ilmor 396 ARCA Engine Saves Money, Lays Off Engine Builders|author=Mike Magda|date=December 25, 2014|access-date=February 23, 2022|work=enginelabs.com|archive-date=June 22, 2024|archive-url=https://web.archive.org/web/20240622165408/https://www.enginelabs.com/news/ilmor-396-arca-engine-saves-money-lays-off-engine-builders/|url-status=live}}</ref><ref>{{cite web|url=https://www.nascar.com/news-media/2020/02/08/ilmor-nt1-engine-powers-gander-rv-outdoors-truck-series/|work=Ilmor Engineering|via=NASCAR.com|date=February 8, 2020|access-date=February 23, 2022|title=Ilmor NT1 engine powers Gander RV & Outdoors Truck Series|archive-date=July 17, 2024|archive-url=https://web.archive.org/web/20240717213930/https://www.nascar.com/news-media/2020/02/08/ilmor-nt1-engine-powers-gander-rv-outdoors-truck-series/|url-status=live}}</ref>

{{Anchor|LSX376}}

; 0LSX376LSX376

Chevrolet Performance LSX376 crate engines are updated versions of LSX crate engine family designed to support up to {{cvt|1000|hp|0}}. All models use the Chevrolet Performance LSX Bowtie block.

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; Noonan Race Engineering

Noonan Race Engineering developed two billet aluminum blocks based on the LS engine. Bore sizes are up to {{cvt|4.185 |in|mm|1}} and stroke up to {{cvt|4.5 500|in|mm|1}} are available, making a {{cvt|495 cu in|cuin|L|1}} displacement possible. The billet construction provides added block integrity suited to high horsepower applications. The block design incorporates turbocharger pressure feed lines in the front of the valley and oil dump ports in the side of the block to return oil to the sump. In addition to the solid block, a waterjacketed version was designed to provide better cooling options for street or endurance purposes. Noonan also developed intake manifolds for the LS, specifically for [[Turbocharger|turbocharging]] or [[Twin-turbo|twin turbo charging]] or [[Supercharger|supercharging]].<ref>{{Cite web|url=https://noonanrace.com/collections/ls-edge|title=LS Edge|last=Engineering|first=Noonan-Ultimate Race|website=Noonan - Ultimate Race Engineering|language=en|access-date=September 30, 2019|archive-date=September 9, 2024|archive-url=https://web.archive.org/web/20240909052326/https://noonanrace.com/collections/ls-edge|url-status=live}}</ref>

==See also==