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Old Jul 28, 2010 | 06:52 AM
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PONTIAC SLP's Avatar
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Default LS7 rings

I have LS7 engine , i'll rebuild it because it has bad rings and smoking , wich ring should i go with ?

- 4.125 Bore, 1.5 - 1.5 - 3.0 mm

or

- 4.130" + .005" 1.5/1.5/3.0

?
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Old Jul 28, 2010 | 07:37 AM
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Those cylinder walls are mighty thin as Is..
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Old Jul 28, 2010 | 11:43 AM
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Originally Posted by nysbadmk8
Those cylinder walls are mighty thin as Is..
LS7 sleeves aren't thin. Bored them +.030 for N/A to patch up a block.

One issue have with them, 90% of pistons for them are 4.125", the block itself is 4.126", once you go to hone the block its only going to get bigger. I'd like if the piston companies would make pistons 4.127" or 4.130" more so then 4.125".

If you're reusing the stock pistons, i'd go with 4.125 +5.
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Old Aug 1, 2010 | 05:48 PM
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hey guys , i need the part # for total seal rings for LS7 pistons ?
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