LS3 Specs: Displacement: 6. But, are the differences worth paying the extra money for? Block The LS3 features a more robust engine block alongside the displacement and bore increase, with revisions made to the casting and machining, providing improved bay-to-bay breathing. Cylinder Heads Although the displacement and bore improvements helped with the power gains, the newly-revised high-flow cylinder heads provide improved flow-rate, helping squeeze out valuable additional horses.
Valvetrain With the LS2 using 2. Intake Flow-rate was one of the main priorities in the LS3, and the intake was another opportunity for improvement. Pistons Larger pistons unique to the LS3 engine are also designed to maximize the high-rpm performance capability.
Injectors Using high-flow injectors previously found in the 7. Exhaust The exhaust will vary between models, but the LS3 Corvette received an active exhaust system that features a butterfly valve opening in the upper rev-range. Emissions Revisions to the engine combined with the small-block layout enable the LS3 to pass the stricter Bin4 requirements, meet the newer emissions standards, and avoid higher-tier gas tax. Camshaft A revised camshaft was included, alongside updated camshaft timing.
Both of these engines are fantastic, and neither will disappoint. Is the LS3 a better choice overall? Would we rather have a turbo or supercharged LS2 over a stock LS3? Are there other alternatives to consider on the market? You bet. Thank you for reading our LS2 vs LS3 guide.
Written by Joe Terrell Drifted. Read more about Joe and the Drifted team on our about us page. Rate This Article 1 votes, average: 5.
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They are not an identical swap There are more than a few changes for swapping. The most important being the timing sensor gear on the crank. It has to match your computer. The next is the cam sensor and or cam gear. Sir I would like to know about the LS3 engine. I have a Chevrolet Impala 3. Thank you please let me know. I have a c5 base model corvette, I would like to put a up grade cam kit TSP Stage 3 in it. What stall would you recommend. My choice was a 6. They are identical to the LS3 heads except for the valves.
I debured and smoothed the ports and blended the valve seats and port matched the intake manifold running a carb vs FI helping the budget. It runs awesome.
What is the best engine for a p Blazer? I want power on the road and off. Should I do an LS or something? Currently you have JavaScript disabled.
In order to post comments, please make sure JavaScript and Cookies are enabled, and reload the page. Both engines are compact, large displacement pushrod designs and well regarded for performance and durability.
An all-aluminum block, the LS1 was first offered in the Corvette but later in the Camaro and Firebird. The engine remained a performance product not offered in any trucks or sedans. The revised block of the LS3 features a larger bore compared with the LS1's, which allows displacement to increase from 5.
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