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What CP pistons do I need?

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

What CP pistons do I need?

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Old

Feb 18, 2013 | 12:11 PM

#1

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What CP pistons do I need?

Going to be boring/honing out my block to either 4.020" or 4.030" bore. Trying to look on the CP piston website for what I need and their site isn't very user friendly in the sense that's it's easy to search for what I need for my application.

Stock LS2 everything minus the bore of the block. I want valve reliefs in the pistons, which seems like all of their pistons come with anyways. Does anyone know what part number I need?

thanks.

-Don

Old

Feb 18, 2013 | 12:57 PM

#2

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All of it depends on your setup. Too large of a relief and youre gonna lose compression. Not enough relief and your valves will hit.

Old

Feb 18, 2013 | 01:05 PM

#3

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I don't think you can select valve relief, so that's not as much of an issue as far as figuring out which piston I need from them.

-Don

Old

Feb 18, 2013 | 01:23 PM

#4

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You should be able to, there are all different ones from -10cc - +10cc and beyond and everything inbetween.

Then youve got domed, dished, flat etc

Old

Feb 18, 2013 | 01:26 PM

#5

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Might want to get that blocked checked out if you want to take it 0.020 or 0.030 over.

Old

Feb 19, 2013 | 10:43 AM

#6

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Are you building the motor for boost or NA?

Old

Feb 19, 2013 | 10:45 AM

#7

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I am building it for NA.

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Old

Feb 19, 2013 | 11:42 AM

#8

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Don, why dont you PM me with your entire build youre planning and I'll try to help you out, or at least get you going in the right direction.

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Old

Feb 19, 2013 | 04:43 PM

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CP doesn't have anything listed on their site, like you need. They do have a low compression piston or some with a larger bore.

Old

Feb 19, 2013 | 05:33 PM

#10

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Why CP? Why not Wiseco?

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