What is the difference between ls2 and ls3

What are the real advantages? It certainly isn't a 10k difference - if that's what you're asking! I wouldn't worry about stock figures either - it's relatively meaningless as a comparison between the capabilities of the two engines. HSV tuning is based on marketing rather than potential. The LS3 is not struggling for power in stock form. The real cost diference between the two engines - is the cost it would take to get the LS2 the same amount of power and torque of the LS3 engine - in real terms.

The LS2 is probably losing kw and 30nm of torque over the LS3 in tuned form. The L98 is probably losing 10kw and 10nm of torque over the L Honestly, for how much better the LS3 is I would personally just save up for a little longer and go with an LS3 instead.

Bottom line is you can beat the snot out of an LS2 for 72 hours, and it makes more HP, more TQ, less crankcase pressure and less blowby as the test proceeds. You can literally compare run data from 1 hour into test against data 2 hours into the test and see an improvement.

Likewise between hour 72 and hour LS2 is far superior based on my direct experience testing both. LS7, yes, but not LS3. Dyno speaks for itself? Explain please. Indeed, these newer motors have their advantages that make them worth the extra cash. First of all, a common arguement against the LS2 or LS3 vs the LS1 or LM7 is that, with the extra cash you have, you can modify the cheaper motors to be better. This may be true. But there are caveats. One if having a nice, wide power curve with lots of torque.

Simply put, the greater displacement of these newer LS motors puts them ahead of the older motors. When modified to try to make up for the difference, the older motors will ALWAYS be peakier, burn more gas, possibly have problems passing emissions testing, and likely be less reliable.

Another factor to consider is heads. But with its 4 inch bores, the LS2 can also benefit from LS3 heads. Neither the LS1 nor the LM7 can. Smog is another consideration. And almost ALL have air injection. This makes engine swaps both more complicated and less clean looking under the hood, at least if you are trying to be emissions compliant. Of course, you need to pay attention to the potentiality of the valve to bore interference.

They have 11 mm head bolts in diameter. These are situated at the inboard edge of the cylinder heads. Because of the long cylinder sleeves, the LS2 cylinder blocks are outstandingly great for stroking.

An input of a 4-inch crack will make it a This series came to the market in the year The performance level was really high and the power output jumped to horsepower. Can you imagine? Particularly more power was given to the LS3 blocks. As a part of the evolution process, it was relaunched in the manually equipped cars in the year The LS3 heads feature 6.

It is also a Gen lV engine of the Chevrolet. The intake ports are rectangular. The port is 2. These engine heads are arrayed with tapered beehive valve springs.

No wonder both of them are developed with user-friendly features maintaining the standard of the LS series engines. Throughout the evolution of many years, they only got better and better with many additional specs and functionalities. Suddenly, the LS1 was left overshadowed by the new kid on the block.

LS2 Specs: Displacement: 6. 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.