L99 vs. LS3 vs. LS7:The most common engine series in history, the LS Series, was initiated in 1997. LS series is famous for its undoubtful performance, well-known accessibility, small block engine, adaptability, and duration. L99, LS3, and LS7 are the L series’ most famous and functional engines. But still, they vary from each other based on some differences between them. If you are looking to evaluate which engine is better for you this article, you have a reason to go through this article thoroughly:
*L99:
L99 is 6.2L, having four small block engines used from 2010-2015 in the Chevy Camaro SS. They were well-known for their performance and good potential. This engine had a rectangular port head that was specialized for airflow. Instead of valves, this system used pistons for more clearance and less compressibility. This engine is also facilitated with an Active fuel management deactivation system and automatic transmissions.
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*LS3:
LS3 belongs to the 4th generation V-8. LS3 facilitated with those components that have excellent performance. LS3 is specialized for manual transmission. LS3 was available till 2017. It had valves and rectangular port heads for horsepower and torque. Furthermore, this system also had a shallow oil pan and oil tank. LS3 had more compressibility and power and an active fuel management system.
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*LS7:
LS7 belongs to the 4th generation.LS7 is the most famous engine. It has more power and the most effortless installation. Its displacement made it one of the most significant engines for the production car. It has Almunium blocks with larger bones. For high airflow, LS7 used a racing-derived cylinder head. It uses a combustion chamber and intake and outlet exhaust that are controlled numerically. This system is also better for oil consumption.
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*Comparision:
Production Period:
Although the L99 LS3 and LS7 belong to the same engine family and generation, they still vary in their production period. LS7 is older than lL99 and LS3. LS7 was in the between the period of 2006 to 2017. While L99 was between 2010 to 2015, and LS3 was from 2008 to 2017.
Engine Displacement:
The much-noted difference between these engines is displacement. The displacement rate in L99 and LS3 is about 6.2 liters, While LS7 has a displacement rate of about 7.0 Liters. The bore center size in L99, LS3, and LS7 is the same, but the cylinder bore size varies in all engines.
Engine Performance:
In LS7, the horsepower rate increases compared to L99 and LS3. LS7 produces around 505 horsepower at 6800rpm, LS3 produces 430 horsepower at 5800rpm, and L99 produces 400 horsepower at 7000rpm. LS7 provides more torque as compared to L99 and LS3.
Engine Material:
L99, LS3, and LS7 belong to the same generation. The material used in them is mostly the same. Their engine blocks and cylinders are coated with Almunium, which facilitates thermal conductivity at a higher rate. LS3 is coated with a nodular iron exhaust manifold, while LS7 is covered with a stainless steel exhaust manifold.
Engine Specifications:
Although the engine specifications in L99, LS3, and LS7 are mostly the same, they also exhibit differences. The compression rate in LS3 is about 10:7:1 while L99 has 10:4:1 and LS7 has 11:0:1. The size of the small block engine in them also varies. LS7 is marginally lighter as compared to L99 and LS7.
Fuel system:
These engines have the same fuel system. They produce a sequential fuel injection configuration. This configuration makes maximum efficiency that allows fuel into the machine by injectors that fire directly. LS7 ensures premium power, which is also recommended for L99 and LS3.
Engine Reliability:
As the same material used in these engines, they also have the same reliability. But still, there are a few differences in these engines on the base of their performance. LS7 is more reliable as compared to L99 and LS3. As the perforamance capabilites of LS7 is superoir as compare to L99 and LS3.
Common problems:
As the engine material is the same for all of them, some common problems exist between them. The knocking noises, Oil pressure issues, and oil overflow are the most common problems of these engines. However, L99 and LS3 are more problematic as compared to LS7.
Prices:
As the LS7 is preferable to the L99 and LS3, there exists a wide range of differences in the price range of these engines. LS7 is more expensive as compared to LS3 and L99. The price of LS7 is about $16600 While LS3 is of $10550 and L99 is of $6850.98
*Final words:L99 vs. LS3 vs. LS7
There are many similarities in their engine material and capabilities, and they have the same generation, but many differences exist between them. LS7 has a higher performance as compared to LS3 and L99. Ls7 is also more reliable as compared to LS3 and L99. Therefore, it is more expensive as compared to other engines.
Read Also: L99 vs. LS3 vs. LS7: Which Is The Best Engine For You?