Compression height of stock LC9 5.3 pistons

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01-29-2018, 03:36 PM

cc-rider

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Compression height of stock LC9 5.3 pistons

Does anyone have the specs on compression height for the stock LC9 5.3 pistons? This is a Gen IV motor that came out of a 2007 suburban.

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01-29-2018, 06:15 PM

A.R. Shale Targa

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Most likely 1.328"

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01-30-2018, 08:45 AM

KCS

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I have a set in my garage; I'll check it later today.

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01-30-2018, 01:40 PM

KCS

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I checked and got .943" in the pin bore and .870" from the top of the pin bore to the top of the piston. So call it 1.342" compression height.

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01-31-2018, 01:12 PM

A.R. Shale Targa

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Quote:

Originally Posted by KCS

I checked and got .943" in the pin bore and .870" from the top of the pin bore to the top of the piston. So call it 1.342" compression height.

Right on !!! I'm thinking replacement overbore ones that move the pin to maintain factory compression ratio

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