How do I know what LT motor I have?

Which LT engine do I have?

The car engines are usually known by the RPO code, which starts with the letters “LT”. The truck engines are usually known as the “EcoTec3”. The best way to determine which engine you have is from the Vehicle Identification Number (VIN) on the original vehicle. Locate the 8th digit of the VIN.

How do I know what type of motor I have?

How to Check Engine Size

  1. Open the hood of your vehicle and prop it up. Make sure it is turned off and cold before proceeding. …
  2. Check your vehicle’s manual. …
  3. Open your web browser and go to …
  4. Look for the VIN number of your vehicle. …
  5. Identify the engine size from the VIN number.

How do I know which 5.3 I have?

If you’re certain it’s a 5.3, it’s the LM7. Only option 5.3 in 2000. Open your glove box and look at the RPO sticker there it should say LM7 as you read through. If you don’t find LM7, look for the 3 digit code and match it to one of the codes on the wikipedia page linked below.

How can I tell if I have an LS or LT?

There are currently just five LT engines, including the LT-based EcoTec3 truck engines: LT1, LT4, L83, L8B, and L86. Much like with LS engines, the easiest way to be sure which LT engine you have is to check the 8th digit of the Vehicle Identification Number (VIN).

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Can you look up VIN numbers for free?

You can get a free VIN check at the National Insurance Crime Bureau (NICB), or Just pop in your car’s digits and these sites will do the VIN lookup and give you information on the vehicle.

What does the engine number tell you?

Every vehicle engine is marked with an engine number by the factory. The engine number includes coded information, which can be decoded to reveal, for example, year of manufacture, country of manufacture, and engine type.

How much does a LT1 engine cost?


LT1 Long Block 396 / 550hp $8,899 Buy in monthly payments with Affirm on orders over $50. Learn more Buy Now
LT1 383 Long Block Boosted $8,299 Buy in monthly payments with Affirm on orders over $50. Learn more Buy Now

Is the LT1 better than LS1?

Main Differences Between LS1 and LT1

LS1 has an engine capacity of 5.7 liters while LT1 has an engine capacity of 5.665 liters. LS1 is lightweight and thus has better performance while LT1 has a heavy body that ensures strength and durability.

Is a LT1 a 350?

The LT1’s iron engine block is sized at 350 cubic inches and has an overall displacement of 5.7 liters. It has a cylinder bore and stroke of 4 and 3.48 inches, respectively. The LT1 has a compression ratio of 10.4 to 1 and a maximum rev-limit of 5,700 rpm.