Gm Lt Engine

In 1992 gm created a new generation small block engine called the lt1 recalling the 1970 lt 1 moniker. Referred to as a small block for its comparative size relative to the physically much larger chevrolet big block engines the family spanned from 262 cu in 43 l to 400 cu in 66 l in displacement. It is part of gms gen v small block engine family and was first introduced in the c7.
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Though the dozens of engines in the gm ls and lt families have many similarities there are significant differences as welland its important to know exactly what those are if youre upgrading your ls or lt engine for more performance or planning an ls or lt engine swap.

Gm lt engine. Mobil 1 is now the official motor oil of chevrolet performance. The chevrolet small block engine is a series of v8 automobile engines used in normal production by the chevrolet division of general motors between 1954 and 2003 using the same basic engine block. Lt crate engines the chevy lt crate engine was introduced on the seventh generation c7 corvette stingray and gms full size trucks and suvs for 2014. Ls and soon to be lt engines are seemingly ubiquitous these days.

The 62 liter v8 lt1 engine is produced by general motors for use in performance vehicles and sports cars. The gm generation i and generation ii lt engine families are both derived from the longstanding chevrolet small block v8the generation iii small block v8 was a clean sheet design which replaced the gen i and gen ii engine families in 2002 and 1995 respectively. Not only can you find them under the hood of most v8 powered gm vehicles they have been hitting the streets since their introduction in the 1997 corvette. Weve yet to see the limits of the lt but know of shops making more than 1000 rwhp on a stock bottom end lt4 without problem.

It displaced 57 l 350 cu in and was a 2 valve pushrod design. The lt1 used a reverse flow cooling system which cooled the cylinder heads first maintaining lower cylinder temperatures and allowing the engine to run at a higher compression than its immediate predecessors. With mobil 1 full synthetic motor oil for street engines and mobil 1 racing oil for race engines mobil 1 protects all chevrolet performance crate engines. Like the previous two generations the buick and oldsmobile small blocks the gen iiiiv can be found in many different brands.

This means the stock bottom end on an lt will probably take more abuse though weve seen ls bottom ends handle up to 800 horsepower and beyondhowever we wouldnt recommend it. And while junkyard builds can be awesome. Also known as the gen v small block it ushered in the next era of historic engines. This means that there is a menagerie of ls or ls based options sitting around in junkyards and classifieds across the nation.