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Stock LS2 piston and rod ?'s.

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Old Jan 8, 2012 | 08:48 PM
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Default Stock LS2 piston and rod ?'s.

I have several ?'s about the stock flat top pistons from LS2/LQ9.

First off, can you buy replacement pin retaining clips? I just bought a used set of rods and pistons and some of the retaining clips are missing.

Also, There is a dot on top of each piston off to one side. Are the dots supposed to go toward the front of the engine?

I've always assembled engines with the "tang" part of the rod towards the outer part of the block, but all of the ones I have are pointing the same direction the way they're put together now, ex- 4 pistons would have dots going towards front of motor, 4 would be pointing towards rear.

which is the right way?

TIA
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Old Jan 8, 2012 | 10:46 PM
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Originally Posted by streetknight2
I have several ?'s about the stock flat top pistons from LS2/LQ9.

First off, can you buy replacement pin retaining clips? I just bought a used set of rods and pistons and some of the retaining clips are missing.

Also, There is a dot on top of each piston off to one side. Are the dots supposed to go toward the front of the engine?

I've always assembled engines with the "tang" part of the rod towards the outer part of the block, but all of the ones I have are pointing the same direction the way they're put together now, ex- 4 pistons would have dots going towards front of motor, 4 would be pointing towards rear.

which is the right way?

TIA
every LS motor i have taken apart all the holes on the pistons face the front of the motor including the LS2 that is sitting in my garage right now... passenger and driver side piston holes face front
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Old Jan 9, 2012 | 07:22 AM
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Thanks
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Old Jan 9, 2012 | 06:53 PM
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This is from my ALLDATA



Russ Kemp
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Old Jan 9, 2012 | 09:04 PM
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Thanks, that answered my ?
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Old Apr 17, 2012 | 01:07 PM
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Originally Posted by Russ K
This is from my ALLDATA



Russ Kemp
I just picked up my rods and pistons from the machine shop and they installed all of my stock rods into my forged pistons w/ valve reliefs in the same orientation. Which means if I were to install them as is, the direction of the flats would alternate front to back. I know what the rebuild books says but functionally I just don't see the difference.

Does anyone know why they say to have them all face the same direction?
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