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The GM / Chevy LR4 is a 4.8 l (293 cu.in.) natural aspirated V8 90° four-stroke gasoline engine from a Generation III small block V8 truck engine series. The engine was produced in St. Catharines, Ontario and Romulus, Michigan. from 1999 to 2006. The LR4 4.8 L engine is also called Vortec 4800.

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1999 engines had 21.8-lb injectors whereas the later engines had 25-lb. injectors.. For LR4 engine specs, read: LR4 4.8L Engine Specs: Performance, Bore & Stroke, Cylinder Heads, Cam Specs & More. How to Get More Power From Your 4.8L LR4 Engine. The LR4, which began its life in trucks and SUVs, is gaining popularity for several reasons:

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L20 4.8L Engine Specs: Performance, Bore & Stroke, Cylinder Heads, Cam Specs & More Posted 11/08/18 by OnAllCylinders Staff Last updated on 12/29/2021 The L20 is a 4.8L Gen. IV iron block truck engine. It replaced the LY2 in 2010. It was upgraded with Variable Valve Timing (VVT) and Flex Fuel technology.

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The 4.8L is the smallest among V8 engines designed by General Motors (GM). The 4.8 series comes in two engines: LR4 V8 and LY2 V8; the former is used in SUVs and pickup trucks, while the latter is used in passenger vans and full-size cargo. The 5.3Lis an advanced version of the V-8 engine with high efficiency, power, and torque balance.

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You can see all of the different 4.8L GM LS engines in the chart below, then click on each specific LS engine name (LR4, L20, LY2) to get other vital engine data like general performance, bore & stroke, cylinder head design, cam specs, and more. 4.8L LS & Vortec Engine Spec Guide

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The engine made 1,203 hp at 26.8 pounds of boost, and turned out to be a 4.8L. Obviously, boost will help make up for a lack of displacement, but if you're scouring a junkyard searching for a.

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The 4.8L is actually just a smaller version of the 5.3L engine, with less stroke and less displacement. That engine is known for reliability which is great news for reliability and longevity of the smaller 4.8L Vortec. The 4.8L Vortec is actually considered to be the more reliable of the engines, since it does not use active fuel management.

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GM 4.8L Liter V8 Vortec L20 Engine The L20 is an engine produced by General Motors for full-size van and pickup vehicles. Displacing 4.8 liters in a V8 configuration, the L20 is part of.

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The 4.8-liter engine is a small-block V8 built by General Motors between 1999 and 2013. Before the 5.3-liter V8 Vortec replaced it, the 4.8-liter went through three generations. The LR4 between 1999 and 2006, LY2 from 2007 to 2009, and L20 from 2010 to 2013.

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The LS 4.8L (293ci) is nestled near the Gen I 283ci, the 5.3L LS truck engine is close to the venerable 327 at 325ci, and the 5.7L LS is kissing-cousins-close to the classic 350ci small-block. The 6.2L (376ci) could be considered approaching the 1970 400ci Mouse motor and then GM broke the mold to build a 427ci small-block LS with the LS7 engine.

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LR4 4.8L Engine Specs: Performance, Bore & Stroke, Cylinder Heads, Cam Specs & More Posted 02/07/19 by OnAllCylinders Staff Last updated on 12/29/2021 The LR4 is a 4.8L iron block truck engine that was introduced in 1999. Along with the LM7 and LQ4, they were the first LS truck engines.

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Intro to the 4.8L L20 Engines. The L20 appeared in model year 2010-17 GM 1500 series trucks and vans that offered between 285-302 horsepower and 285 ft.-lbs. of torque. It's a Gen IV 4.8L iron-block engine, so you're getting the better intake manifold, connecting rods, and ECM. The engine—considered an updated version of the LY2—had 799.

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3 yr./ 36000 mi. Power / Horsepower. 295 HP @ 5600 rpm. Torque. 305 ft-lb @ 4800 rpm. MPG (Economy) 14 city / 18 highway. Curb Weight. 4,807 lbs.

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The 4.8L flat-top pistons are a common (and inexpensive) upgrade for a 5.3L. Crankshaft and connecting-rod casting numbers are the real key to distinguishing between the two. If you have crank.

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The 4.8 Vortec engine is one of the small-block V8 engines manufactured by General Motors. It was introduced to the market in 1999 and lasted till 2013 until it was replaced by the 5.3 Vortec powered by Active Fuel Management. Throughout its lifespan, the 4.8 Vortec went through three variations - three generations: Gen III - LR4

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Chevy 4.8 Vortec Specs Vortec 4800 Vehicles The Vortec 4800 appeared in the following vehicles: LR4 - 255-280 horsepower, 285-295 lb-ft of torque, 9.4:1 Compression ratio 1999-2006 Chevrolet Silverado 1500 1999-2006 GMC Sierra 1500 2000-2006 Chevrolet Tahoe 2000-2006 GMC Yukon 2003-2006 Chevrolet Express 2003-2006 GMC Savana