How much boost does it take to push a stock LS3?
For the enterprising horsepower-seeking enthusiast to reach this mark via a power-adder, roughly 5 to 9-pounds of boost from a supercharger or turbocharger application would be needed, which is largely considered a pretty tame level of boost to push through the stock LS3 engine.
What is the performance potential of the L83 and L86 engines?
The L83 (5.3L) and L86 (6.2L) performance potential is especially promising due to these modern generation LT engines offering so much more power and technology than its predecessor in a factory trim.
What is the difference between the L83 and L86 intake manifolds?
During our R&D process with the L83 (5.3L) engine, we discovered that the intake manifold and throttle body from the L86 (6.2L) was a direct bolt-on application for the L83 (5.3L)! The ports lined up perfectly, with the main difference between the two being: runner length and plenum design.
How much boost do I need for 800 horsepower?
800 horsepower will require between 11- and 15-pounds of boost depending upon your combination, which undoubtedly begins to stress some – if not most – of the engine’s internal components. At this level, it became a common suggestion to change out much of your rotating assembly and cylinder head components.
How much HP can a L83 handle?
Looking at rated power alone, the gen-5 L83 stepped up the power output of the original 205-hp 350 to a solid 355 hp. The extra 150 hp offered by the newer L83 is even more impressive given the fact the gains came after a drop in displacement (324 inches vs 350 inches) and sizable increase in fuel economy.
Is the L83 a good engine?
The L83 is GM's LT based direct-injected 5.3L engine that comes in every GM truck imaginable. They are plentiful, powerful, and reliable, and are now starting to show up in hot rods, muscle cars, and classic trucks.
What is the difference between L83 and L86?
During our R&D process with the L83 (5.3L) engine, we discovered that the intake manifold and throttle body from the L86 (6.2L) was a direct bolt-on application for the L83 (5.3L)! The ports lined up perfectly, with the main difference between the two being: runner length and plenum design.
Is the L83 an aluminum block?
Generation V-Ecotec3 L86 and L83 CHEVY'S ECOTEC 3 ENGINE IS BUILT USING AN ALUMINUM BLOCK WITH ALUMINUM CYLINDER HEADS AND INCLUDES DIRECT FUEL INJECTION.
How long does a L83 engine last?
To summarize, the 5.3-liter EcoTec3 V8 is a robust and reliable engine. Keep it well maintained, use premium fuel to extend the life of the direct injectors, pour only the recommended oil. All this is a guarantee that the 5.3 EcoTec3 engine will last over 250,000 miles.
How much is a L83 swap?
The typical salvage yard L83 engine sells for about $1,500, depending on the year and mileage. One thing to remember, is the 2017-and-later Gen-V engines have a different ECM and harness. If you get just an engine, confirm what controller you need.
Is L83 crankshaft forged?
One of Diamond Pistons' newest products for the LT engine is no exception to the brand's reputation. The new GM Gen V L83 pistons are machined from forged, 2618 aluminum, and are designed for nitrous, boost, and extremely high-horsepower applications.
Is L83 flex fuel?
The GM L83 V8 engine is used in pickup trucks and SUVs....EcoTec3 Engine Family Features.Type:5.3L V8Fuel delivery:direct fuel injection with Active Fuel ManagementCompression ratio:11.0:1Horsepower (hp / kW @ rpm):355 / 250 @ 5600 (gas – SAE certified)380 / 283 @ 5600 (E85 – SAE certified)14 more rows
Does the L83 have AFM?
5.3L L83 Features The Gen-V 5.3L L83 engine delivers a combination of advanced technologies, including Direct Injection, Active Fuel Management (cylinder deactivation), and dual-equal camshaft phasing (Variable Valve Timing) that support an advanced combustion system.
What heads come with L83?
They are known as the EcoTec3 5.3L engines. These engines are all-aluminum and use Active Fuel Management (AFM), Variable Valve Timing (VVT), and are Flex Fuel Capable (E85)....Chevy L83 and L8B Engine Specs.Cylinder Head SpecificationsCasting Number12620214Material319-T7 AluminumCombustion Chamber Volume57.6ccIntake Port ShapeRectangle5 more rows•Jan 9, 2018
How much does an L83 engine weigh?
ConclusionFiring Order1-8-7-2-6-5-4-3 #1 cylinder left bank, forwardBoreLT1 / LT4 / L86 / LT5/L8T: 4.065 L83 5.3L: 3.78Stroke3.622, except: L8T: 3.858Engine WeightLT1: 550 lbs. LT4: 570 lbs. (weights are approximate)Bore Spacing4.40 inches37 more rows•Dec 14, 2020
What year did L83 come out?
This is an engine specification guide for General Motors' fifth-generation L83 and L8B engines that launched in 2014. These LT-based engines are commonly referred to as EcoTec3 5.3L engines.
L83 (5.3L) & L86 (6.2L) Cylinder Heads
When it came to designing a cylinder head package for our L83 (5.3L) truck customers, we kept the ports small in order to emphasize port velocity. This has allowed us to see significant power increases under the curve, not just in the high RPM range.
Recent L83 (5.3L) Build
One one of our recent L83 builds we were able to observe significant performance gains from our L83 (5.3L) cylinder heads, camshaft, and intake manifolds.
Ready to start building your L83 or L86 GM Truck?
We’d love to help! If you have any questions – just shoot us an email at [email protected] or call us at (501) 985-4947!
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Flying Tomatoes
I'll be doing an Edelbrock or Whipple unit at some point this summer. Stock headers most likely.
Chevarado Guy
I have procharged 14 Silverado with headers y-pipe catch can exhaust ect... Pushing 11 psi
How much horsepower does a LS3 have?
Reaching the 500 horsepower mark with an LS3 is really representative of the “real world” scenario for most hobbyists. It involves only a nominal increase in power from the stock rated numbers – 70hp for the Corvette and 74hp for the Camaro – and doesn’t require a huge investment of time and money in order to achieve.
What is the LS3 Corvette?
The LS3 was the latest addition to the LSX family of GM high performance V8 engines, and benefited from the knowledge gathered over the years from its predecessors . The first of the Generation IV engines, the LS2, was introduced as the base power plant for the 2005 Corvette and produced 400 horsepower. The LS3 is a great progression on the LS2, ...
What is the LS3 engine?
The LS3 engine is built around a strong cast aluminum block with 6-bolt main caps and internal components with performance and the enthusiast in mind. It features a strong nodular iron crankshaft, with powdered metal forged connecting rods, and hypereutectic aluminum pistons. The LS3 benefits from years of refining in its predecessors in ...
What engine does a 2008 Corvette have?
In 2008, GM introduced the new 6.2–liter LS3 engine in the Chevrolet Corvette, creating a lot of buzz in the process. With its whopping SAE-rated 436 naturally-aspirated horses and 428 ft. lbs of torque, Corvette enthusiasts were licking their chops to get their hands on the new powerplant.
What rods should I use for LS3?
According to Borschke, aluminum rods are only suggested for use in full-on LS3 race motors, and unless you’re going that route, recommends sticking with steel.
How many bolts does a Corvette have?
The bulkhead accommodates six-bolt, cross-bolted main bearing caps that work to limit crank flex, that, in addition to a structural oil pan, stiffens the overall structure of the engine. Like all of the base LSX engines found in the Corvette, it has a 3.62-inch stroke crankshaft.
Does a factor LSA pump work on a LS3?
As far as oil pumps go, the factor LSA unit, which is the largest volume pump that GM produces, will work great on your high horsepower, forced induction LS3. There’s no doubt that the LS3 plant – and all the LS engines, for that matter – were a great leap forward for GM.
