Need Help Identifying My LS Engine - Chart or Guide?

Technical Discussions
1

I recently got my hands on an LS engine and I’m trying to figure out exactly which model it is. There seems to be a lot of variety with the LS series, and I want to ensure that I’m identifying it correctly for any future modifications or swaps I might consider.

Here’s what I know so far:

  • The casting number seems off, and I’ve read that the VIN can be helpful too
  • I’ve seen a few charts online that show the differences in components among the various LS generations
  • I’m particularly interested in the specs for the injectors as well, so any info on that would be great

Questions:

  1. Is there a reliable LS engine identification chart that you all recommend?
  2. Any personal tips or methods for identifying your engine models?
  3. What are some common pitfalls to look out for when trying to identify LS engines?

I appreciate any insights or resources you can share! Thanks in advance!

2

Hey everyone! I’m trying to figure out which LS engine I have. I think it’s an LS1 based on some specs, but I’m not sure. Is there a good chart for identifying these engines?

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3

The LS1 is a classic! It was in the Corvette and Camaro. Look for the aluminum block and the rectangle port heads for ID. A good chart will clarify that.

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4

Don’t forget about the LS3! It’s got more power and comes with the Modified 6.2L. Great for hot rods or any performance application! You can identify it by its unique timing cover.

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5

That’s right! I think the timing cover has a wider notch compared to the LS1. Anyone have pictures to share?

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6

I find the LS7 fascinating! It’s powerful, meant for the Z06. The best way to ID it? Check for the dry sump system. Just a bit of a beast in performance!

7

Awesome info, everyone! So many variations of LS engines! I’m mostly interested in LS3 specs. Can someone share the typical horsepower numbers?

8

The LS3 usually comes in around 430-435 hp, depending on the application. It’s a nice boost over the LS1!

9

Don’t underestimate the LS1! It may be older, but it still packs a punch with about 305 hp stock. It’s all about how you tune it post-install.

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10

Are you guys sure the LS1 isn’t better for certain builds? I mean, given its lower weight, it could fit in more compact designs. Just a thought!

11

That’s an interesting take! Weight certainly matters, but I feel like the LS3 has a nice edge for performance enthusiasts.

12

Alright, here’s a humor break: Why did the LS engine break up with its partner? It found a more compatible block! Haha!

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LOL, that’s a good one! But back to business, I think specifying which engine you have can really help in performance upgrades later on. Throw out any more specific questions!

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14

Will do! I might have some parts to swap out based on what I find. If only figuring it out wasn’t so complex!

15

Identifying LS engines can be tricky! One thing that often confuses people is the difference between the LS1 and LS6. There’s a good guide online that outlines the key features to look for, like the intake manifold design.

16

I completely agree! Another challenge is telling the LS3 apart from the LS2. Pay close attention to the throttle body location, it can make a big difference.

17

I often rely on LS engine tags, but mistakes can happen. Does anyone have tips on double-checking those identification numbers? It’s so easy to misread them under the hood.

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I usually take a picture of the tag and zoom in on it later. It helps to avoid any misreads, especially in tight spaces.

19

Don’t forget about the year of the engine! Some variations were made year by year, which can really change your identification process. A thorough chart helps narrow it down.

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20

Haha, I once mistook an LS engine for a vacuum cleaner because of all the hoses! Make sure to clear out the engine bay for a better view. It might help with identification!

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