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Generation III Internal Engine
Piston identification

Generation III Internal Engine 1997-2006 LS1 | LS6

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Piston identification

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Old

Dec 21, 2023 | 11:55 AM

#1

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Piston identification

Piston identification, can anyone help me identify the make of this LS2 piston please.

Can anyone identify the make of this LS2 piston please?

Only other markings on it are no1 and .50 stamped on it.

Old

Dec 21, 2023 | 02:52 PM

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Looks like an aftermarket 0.020" piston which is 0.50mm over or close.

Old

Dec 21, 2023 | 07:51 PM

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Pull it out of the block. That might be a UEM Silvolite.

Old

Dec 22, 2023 | 03:00 AM

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It’s out the block and this is the only marking on it, I can’t relate it to any manufacturer

Old

Dec 22, 2023 | 05:57 AM

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Can you post a picture of what the out side of the piston looks like. I would like to see the coating and the ring lands.

Each manufacturer does it differently and it may help Identify it.

Old

Dec 22, 2023 | 09:16 AM

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Old

Dec 22, 2023 | 10:38 AM

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Well it's not a Silvolite, Speed pro, or Moresa.

The Skirt looks like an EngineTech P5041

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Old

Dec 23, 2023 | 09:51 AM

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Any issues with it or just trying to figure out what you had?

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Old

Dec 23, 2023 | 10:10 AM

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Quote:

Originally Posted by slowride

Any issues with it or just trying to figure out what you had?

Piston broke away on side by top ring. Trying to identify it. It measures 4.011”( in the correct place with calibrated equipment) but the bore measures 4.017. Neither makes sense!

Old

Dec 23, 2023 | 10:51 AM

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So piston is very small for the listed size and the bore has way too much clearance for a OE replacement piston. Curious what the engine combo was?

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