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Generation III Internal Engine 1997-2006 LS1 | LS6
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can someone calculate my compression?

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Old Apr 26, 2007 | 12:23 PM
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GR33N GoblinM6's Avatar
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Default can someone calculate my compression?
Sorry not sure how to calculate the compression

Using stock short block (so thats stock pistons)

GM MLS head gaskets 12498544 (says compressed thickness is .060)

241 heads, milled off .028.. now 63cc's

what is my compression?
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Old Apr 26, 2007 | 12:37 PM
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~10.6:1 using the stock 98 LS1 short block and those numbers you listed.
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Old Apr 26, 2007 | 01:18 PM
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awesome thanks Matt... oh and im ordering a new LS6 oil pump from you right now, thought i might as well change it with the cam swap..
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Old Apr 26, 2007 | 01:21 PM
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Not a bad idea!
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Old Apr 26, 2007 | 02:26 PM
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Whats an estimate on mine?
Cam is 234 243 597 610 on a 110 plus 4 deg
Ported 853s
Fel Pro Head Gaskets, not sure of thickness
6.0 Iron Block with stock pistons
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Old Apr 26, 2007 | 05:18 PM
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does anyone know?
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Old Apr 27, 2007 | 12:19 PM
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How do you calculate compression?
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Old Apr 27, 2007 | 12:24 PM
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What size chamber and what thickness gasket? Stock short block?
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Old Apr 28, 2007 | 12:47 PM
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guys, do a search for the DCR spreadsheet pianoprodigy posted up a while back...
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Old Jun 28, 2007 | 08:53 PM
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Was searching for some cylinder head specs and saw this thread... eh what the hell here it is since i saw a guy ask...
Attached Files
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Old Jun 29, 2007 | 03:59 AM
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For SCR calculations this one is LS1 friendly

http://www.rbracing-rsr.com/compstaticcalc.html
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