The Beginning

I bought my first Camaro in 1972 when I was 16. It cost $2,500 and only had 28,000 miles on it. It was a stock Camaro with a 327 SBC engine. It had a 2 barrel carb with an automatic transmission. I loved that car and it gave me so may fond memories.

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My Yellow 1969 Camaro

Yellow with black stripes, 350 SBC engine (400hp), Muncie 4-speed, 12 bolt rear end with 411 gears, Upgraded control arms, upgraded rear leaf springs, rack and pinion steering.

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1969 Black Camaro

Black with red stripes, stock 350 SBC engine, Muncie 4-speed, 10 bolt rear end with stock gears, quick ratio steering box.

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LS2 engine

LS2 Engine Horsepower Guide

The LS engine is a series of engines produced by General Motors (GM). The design of the engines was intended to be the on V-8 engines used on their line of rear wheel drive vehicles. The original design of the LS engine was done completely from scratch and did not borrow any existing parts from other GM engines. Its layout did borrow from some of the same concepts of the original small block design by Ed Cole. The most famous vehicle that the LS engine is used in is the Chevrolet Corvette.

Displacement and Power Output

The LS2 engine is part of the Generation IV series of engines from General Motors. It was introduced in 2005 and features much higher displacement ranges at up to 7,011cc. The LS2 is also known to have a higher power output at up to 638 burst header packet (bhp), the unit for measuring power.

Another introduction with the LS2 engine was the Displacement on Demand technology. This means that alternating cylinders that are in the firing sequence can be deactivated. It is a part of the Active Fuel Management system, previously called the Displacement on Demand or DoD system. Essentially this technology allows for the best of both worlds. It allows for high power when needed and improved fuel economy when high power is not needed. According to EPA tests, this new technology has been shown to improve fuel economy by 5.5 to 7.5 percent.

The LS2 can also accommodate variable valve timing. This is the process of altering the timing of a valve’s lift. The result is an improved level of performance, fuel economy, and a reduction in engine emissions. Again, this technology adds to increased overall performance without sacrificing any horsepower when needed.

The General Motors LS2 Data Sheet

As with any engine, the GM LS2 engine can be tweaked beyond its base output. With that said, it is still helpful to understand the base powerplant that is in the Gen IV engine from General Motors. There is a simple breakdown of the base specifications for the GM LS2 engines.

Specifications

Base horsepower 400 bhp at 6000 rpm
Torque 400 pounds per foot at 4400 rpm
Displacement 5,967cc
Casting heads Same as the LS6 “243” casting heads
Compression ratio 10.9:1

There are also some factory modifications available for the GM LS2 engine. The three most common factory modifications are E-series HSV in Australia that produces 412 bhp and 412 pound per foot. Then there is the LS2s in the Chevrolet Trailblazer SS with 395 bhp and 400 lb per foot of torque, and the Saab 9-7X Aero with 395 bhp and 400 pound per foot of torque.

As an aside, the LS2 engine is also modified and used in the trucks that race in the NASCAR’s Camping World Series. This of course is not available on the open market for purchase because it is heavily modified. There are many current vehicles and models that use the GM LS2 engine, dependent upon the production years that they were in use.

Year(s)

Series

2005 to 2006
  • Vauxhall Monaro VXR
  • Chevrolet SSR
  • Pontiac GTO
  • Holden Special Vehicles:
  • Clubsport: Series Z
  • Senator: Series Z
  • SV6000: Series Z
  • Maloo: Series Z
  • Coupé GTO: Series Z
2005 to 2008
  • Holden Special Vehicles
  • Clubsport R8: Series Z and E
  • Grange: Series Z and E
  • Maloo R8: Series Z and E
2006 to 2009
  • Chevrolet TrailBlazer SS
2008 to 2009
  • Saab 9 to 7X Aero
2006 to 2007
  • Cadillac CTS V to Series

Stock and Aftermarket Components

Stock components for any engine are designed to produce an exact performance level at a maximum cost advantage. This line of thinking makes perfect sense since the automobile manufacturers are in the business of maximizing profit. That also means that it should not be surprising that there are many opportunities to improve overall power and performance with aftermarket components.

The first place to start is with the intake. In the factory, GM just uses the LS6 intake for its LS2 model engine. The LS2 can actually support a larger throttle body, meaning a larger intake. The larger intake means more horsepower. As long as the specs for the intake state that it is either for a LS6 or a LS2 engine then it will be compatible.

Adding aftermarket headers can also greatly improve overall performance of your vehicle. Of course for even more power just add the headers with nitrous oxide or forced induction. This usually requires the aftermarket header as well as an aftermarket kit. Adding nitrous oxide to the LS2 is done by attaching a nitrous kit such as the NOS nitrous kit.

Blowers and turbos can also be added to the GM LS2 engines. In fact, the LS2 engines respond very well to aftermarket blowers and turbos. These can be installed on top of the engine manifold to supercharge the engine by forcing compressed air into it for more horsepower during combustion.

So how much additional horsepower is there to be gained with aftermarket components? Well there are a lot of factors that go into this. Not only are the different components important but the materials used to construct the components are also important. Weight, strength, and heat dissipation are the three characteristics that can either gain or rob horsepower. Some LS2 modifications have produced as much as 1,000 horsepower. On average though, most enthusiasts boost their horsepower to somewhere in the range of 500 to 800 horsepower.

Finding LS2 Engines and Components on eBay

For the most part, the components used for the GM LS2 engine are all specifically made for that engine. There are some components that were borrowed from the LS6 engine though. When searching for different components on eBay, it might be wise to search for both LS2 and LS6 engine components, as many of them are actually interchangeable.

Take the time to read the specifications for each engine component though because there is no guarantee that every LS6 component will work with the LS2 engine. Most specifications will state the models the components are made for. If this information is not there, then be sure to ask the seller a question about it first just to make sure. If the seller does not know for sure, then at least get the part number for the component, and then check with the component manufacturer to see if it will indeed work or not.

Finally, do not forget about the shipping. Just about all major engine components are going to be heavy. Find out exactly how much the shipping will cost. It might even be worth it to perform a search for your LS2 engine components based on geographic region. If the item is being shipped at a closer distance, the cost will certainly be less for shipping. This is a very popular engine so it should not be too difficult to find components for the engine closer to your area. You may even be able to organize to pick up your items from the seller to save costs on shipping. For parts that are heavier, free shipping options make it much more affordable so consider sellers that offer shipping deals.

Conclusion

One of the biggest reasons for the popularity of the GM LS2 engines is the ability for owners to customize their engine and tune it to their own performance goals. Base configurations are always going to leave room for improvement, and the LS2 certainly leaves a lot of additional room for improvement.

Horsepower is not the only area where the LS2 engine can be improved either. Its design allows for improved fuel economy. There are even aftermarket options for improving the fuel economy even more. Overall, the GM LS2 engine gives owners the best of both worlds. LS2 engine owners can customize for horsepower and customize for fuel savings.

LS2 engine

LS2 Engine Information, Horsepower, Applications HP TQ

This guide will explain horsepower stats, information, and applications for the LS2 engine, an aluminum 6.0L pushrod V8.

The LS2 was introduced as the Corvette’s new base engine for the 2005 model year. It also appeared as the standard powerplant for the 2005-2006 GTO. It produces 400 bhp (300 kW)@6000rpm and 400 lb·ft (542 N·m)@4400rpm from a slightly larger displacement of 5,967 cc (5.967 L; 364.1 cu in). It is similar to the high-performance LS6, but with improved torque throughout the rpm range. The LS2 uses the “243” casting heads used on the LS6 (although without the sodium filled valves), a smaller camshaft, and an additional 18 cubic inches. The compression of the LS2 was also raised to 10.9:1 compared to the LS1s 10.25:1 and the LS6s 10.5:1.

The LS2s in the Chevrolet Trailblazer SS and the Saab 9-7X Aero are rated at 395 bhp (295 kW) (2006-2007) or 390 bhp (290 kW) (2008-2009) and 400 lb·ft (542 N·m) of torque due to a different (sometimes referred to as a “truck”) intake manifold that produces more torque at lower RPMs.

The LS2 is also used as the basis of the NASCAR Specification Engine that is used as an optional engine in NASCAR’s Camping World Series East and West divisions starting in 2006, and starting in 2010 may also be used on tracks shorter than two kilometers (1.25 miles) in the Camping World Truck Series.

Applications:

2005-2006 Pontiac GTO
2005-2006 Chevrolet SSR
2005-2007 Chevrolet Corvette
2006-2007 Cadillac CTS-V
2006-2009 Chevrolet TrailBlazer SS
2008-2009 Saab 9-7X Aero

LS2 engine

Contemplating an LS Engine swap

I have an overheating problem in the black Camaro that is driving me up the wall so I am contemplating a LS engine swap.  Now it is time to do my homework.  First thing is which LS engine to swap into the Camaro.  I accumulated this list from forums and other places.  It seems to be fairly accurate and comprehensive.  Now to choose my engine?

I found this link that shows a budget minded swap – something to consider:  http://oppositelock.jalopnik.com/speed-on-a-budget-build-a-400hp-chevy-ls-motor-for-und-1125469009

LS1
1997–2004 Chevrolet Corvette C5, excluding Z06
1998–2002 Chevrolet Camaro Z28, SS
1998–2002 Pontiac Firebird Formula, Trans Am
2004-2005 Pontiac GTO

LS2:
2005-2006 Pontiac GTO
2005-2006 Chevrolet SSR
2005-2007 Chevrolet Corvette
2006-2007 Cadillac CTS-V
2006-2009 Chevrolet TrailBlazer SS
2008-2009 Saab 9-7X Aero

LS3:
08+ C6
2010 SS

L92:
07+ Escalade/Denali

L76:
G8

LQ4:
00-07 2500 GM Trucks and Vans

LQ9:
00-07 Escalade/Denali, Silverado SS

2005 to 2006 GTOs had the ls2.
The 2005 to 2007 corvette had the ls2.
The 2003 to 2005 CTSV came with the ls6.
The 2006 to 2008 CTSV came with the ls2.
Cadillac escalades come with the LQ9.
Hummer H2s come with the LQ4

LM4 Truck engine
2004 Buick Rainier
2003–2004 Chevrolet SSR
2003–2004 Chevrolet TrailBlazer EXT
2004 GMC Envoy XL
2003–2004 Isuzu Ascender