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Generation IV Internal Engine 2005-2014 LS2 | LS3 | LS7 | L92 | LS9

L99 Piston Volume?

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Old 04-19-2018, 08:28 PM
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Default L99 Piston Volume?
Does anyone know the volume of a L99 piston? Im trying to figure out the compression for a pair of heads I might buy.
I've done a search and looked on the web, but couldn't find anything.

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Old 04-19-2018, 09:17 PM
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I’m guessing the valve notches to be about 2.5-3 cc since the compression is 10.3.1 whereas the LS3 is 10.7:1
Allows for the variable cam timing phaser
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Old 05-11-2018, 03:41 PM
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Originally Posted by A.R. Shale Targa
I’m guessing the valve notches to be about 2.5-3 cc since the compression is 10.3.1 whereas the LS3 is 10.7:1
Allows for the variable cam timing phaser
Very close estimate and pretty much spot on. https://help.summitracing.com/app/an...id/4873/kw/l99 has a link to L99 engine specs. You'll also find info on over 50 other Gen. 3/4/5 LS/LT/Vortec/Ecoboost3 RPO codes. Just type in the rpo code in the search box and a list of applicable articles will pop up.
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