LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Engine Identification

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Old 12-02-2015, 06:30 AM
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Engine Identification

Good Morning Members,
Not quite sure what 94 Camaro LT1 my transplant came
from. Is there any #s on the block that can pinpoint the info?
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Old 12-02-2015, 07:32 AM
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Re: Engine Identification

There is an ID number in front of the passenger side head on the block just above where the water pump mounts. Most start with V0xxxx
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Old 12-02-2015, 08:56 AM
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Re: Engine Identification

Originally Posted by lt1-xjs
There is an ID number in front of the passenger side head on the block just above where the water pump mounts. Most start with V0xxxx
Thanks, but impossible to see with everything in the way. Any other areas on the block?
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Old 12-02-2015, 09:05 AM
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Re: Engine Identification

The LT1 partial VIN is on the back of the engine, driver side, above the oil filter. Shoebox has a photo.

http://shbox.com/1/block_vin.jpg

This will tell you the model year of the vehicle the engine was originally installed in, and whether that vehicle was a Chevrolet or a Pontiac. Note that "Chevrolet" could be either a Camaro or an Impala SS.
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Old 12-02-2015, 09:25 AM
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Re: Engine Identification

Originally Posted by frankrizz
Thanks, but impossible to see with everything in the way. Any other areas on the block?
This number has the suffix code that has the info you requested. It can be seen with a flash light and a mirror from what they say.
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Old 12-02-2015, 09:38 AM
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Re: Engine Identification

Originally Posted by Injuneer
The LT1 partial VIN is on the back of the engine, driver side, above the oil filter. Shoebox has a photo.

http://shbox.com/1/block_vin.jpg

This will tell you the model year of the vehicle the engine was originally installed in, and whether that vehicle was a Chevrolet or a Pontiac. Note that "Chevrolet" could be either a Camaro or an Impala SS.
Hey Fred, thanks. My #s read 1R2200868 Can you identify this?
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Old 12-02-2015, 10:55 AM
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Re: Engine Identification

Just tells you it's a 1994 Chevrolet.
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Old 12-02-2015, 01:52 PM
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Re: Engine Identification

Originally Posted by frankrizz
Hey Fred, thanks. My #s read 1R2200868 Can you identify this?
The make and year are decoded in the link Fred gave you. The numbers after the R are the plant (first 2 would be St. Therese for an f-body) and the next numbers are the sequential build numbers from the assembly line.


More info...
http://shbox.com/1/vin_engine_id.jpg

Last edited by shoebox; 12-02-2015 at 03:23 PM.
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Old 12-02-2015, 02:36 PM
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Re: Engine Identification

Since there are two different sources of info, what EXACTLY are you looking for?

Not quite sure what 94 Camaro LT1 my transplant came from.
Rob's link tells you its from a 94 Z28.... and all 1994 F-Body LT1 engines are the same, except for the minor, external emissions variations, reflected by a 3 letter code . Doesn't matter if it came from a Camaro or a Firebird. If you want to know the source of the engine, which is typically Flint, and the date it was assembled, and verify the original emissions provisions, you need to find a way to access the number stanped on the front of the block, as mentioned above.
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Old 02-21-2021, 08:46 AM
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Re: Engine Identification

My engine ID is stamped on a machined area passenger side of the block...VO425YSH. I'd like to "decode" the YSH.
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Old 12-13-2022, 08:54 AM
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Re: Engine Identification

Did you ever get the YSH figure it out because I am looking for it too. Here’s what I have.


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Old 12-13-2022, 11:56 AM
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Re: Engine Identification

"Ron Thomas" signed back in 6 hours after his post above, and never came back again. Guess he was unhappy because no one responded in 6 hours. Given the small number of active members on this site, this was an unreasonable expectation.
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Old 12-13-2022, 10:45 PM
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Re: Engine Identification

Originally Posted by Injuneer
"Ron Thomas" signed back in 6 hours after his post above, and never came back again. Guess he was unhappy because no one responded in 6 hours. Given the small number of active members on this site, this was an unreasonable expectation.
Yep. 6 hours is not enough time for this old fart,me, to respond responsibly. Kids should know that by observing their grandparents. Too bad, they are on their phones too long all the time to bother. Rant over.

Last edited by GaryDoug; 12-13-2022 at 10:48 PM.
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