Compression

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04-03-2014, 06:18 PM

JHZ28

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Compression

I bought a l9h motor that needs pistons. Stock compression is 10.5.1 I got a set of ls3 flat top pistons I plan on using. How much higher is my compression going to be

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04-08-2014, 05:55 AM

JHZ28

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Heads are stock 823 castings no milling to heads or block. With stock crank and rods

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04-08-2014, 08:56 AM

Briou

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Do you know the difference in cc's between the two pistons?

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04-08-2014, 01:31 PM

redtan

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You'll basically be around the same compression as a stock LS3, which is 10.8 I believe or around there. A little under the 11 mark.

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04-08-2014, 05:54 PM

JHZ28

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cool thanks i didnt think it was going to raise it a alot

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04-09-2014, 05:38 PM

yonerhottlt1

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LS3 is 10.7:1 stock compression.

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