A popular phrase in the automotive sector is that the engine is the car’s heart. Many notable engine models have graced the automotive industry throughout the years. The LS small-block engine series made by General Motors is one example.
Although this series encompasses a number of engine variants, we will be comparing the LS3 and LS7 in this article. It pits two top performers against each other in an effort to determine who is better.
Stay tuned as we take a close look at each of them to reveal all its features and functionalities.
LS3 vs. LS7 Specification
One important thing to keep in mind while comparing the two engines is their specifications. One commonality between the LS3 and LS7 engines is that they are both LS2 variants. They are upgrades to the LS2 and share nearly identical engine blocks with that model.
Their construction is mostly aluminum, with traces of steel and titanium. For this automotive component, it ensures that they are both lightweight and long-lasting. When it comes to ignition timing, both engines make use of the 58X system.
The displacements are one way in which LS7 and LS3 differ from one another. The displacement of the former is 6.2 liters, while that of the latter is 7 liters. Several characteristics, including the design, are shared with the LS2. The bore size is one of the upgrades that distinguishes them from one another.
The bore sizes of both are greater than those of the LS2. Engine bore sizes for the LS3 and LS7 are nearly identical; the LS7 engine has a little thicker bore.
The LS7 is more potent with 505 horsepower, so that’s another thing to consider when comparing the two engines. 430 horsepower is the LS3’s value. As part of engine modifications, an LS3 supercharger can increase horsepower to remarkable levels.
LS3 vs. LS7 Performance
Both the performance and reliability metrics take the combined power of the two LS engines into account. The LS3 boasts 430 horsepower, 424 pound-feet of torque, and a displacement of 6.2 liters.
Modifications can increase the horsepower to 436, and a supercharger might take it even higher. In contrast, the LS7 boasts 505 horsepower thanks to its 7-liter displacement. Up to 570 hp is possible with modifications.
LS3 vs. LS7 Engine Price
When picking a car part, you should pay attention to the price. While you may want to go for the cheapest component, you should focus on the price. The LS3 engine price is around $7000 to $13000, depending on your dealer.
On the flip side, the LS7 engine price ranges from $14000 to $17000. It is higher than the LS3, probably due to its impressive performance and specs. You can see that the price difference between the two engines is around $4000. If you want the best value, you can overlook the difference and go for the LS7. However, if on a fixed budget, go for the LS3.
A point to note is that you may find cheaper variants of the LS3 and LS7. There are iron types that are way more affordable, though you compromise on lightness and other aluminum attributes.
Conclusion
Among small-block engines, GM’s LS series is among the best and produces the most power. To help readers better comprehend both LS3 and LS7, this essay takes on the argument between the two. To better understand these LS builds and what makes them special, you can read this article. To get the ride you want, choose an engine that suits your needs.
